From ccf06155704515a08afbd228f831a661ad2997c6 Mon Sep 17 00:00:00 2001
From: Moxiegirl <mary@blockstack.com>
Date: Thu, 29 Nov 2018 20:32:54 -0800
Subject: [PATCH] Restructure the ZEro to Dapp (#37)

Signed-off-by: Mary Anthony <mary@blockstack.com>
---
 _develop/images/project-prompt.png | Bin 0 -> 22581 bytes
 _develop/zero_to_dapp_1.md         | 189 +++++--
 _develop/zero_to_dapp_2.md         | 384 ++++++++++----
 _develop/zero_to_dapp_3.md         | 424 ++-------------
 _develop/zero_to_dapp_3_win.md     | 802 -----------------------------
 _develop/zero_to_dapp_4.md         |  21 +-
 6 files changed, 451 insertions(+), 1369 deletions(-)
 create mode 100644 _develop/images/project-prompt.png
 delete mode 100644 _develop/zero_to_dapp_3_win.md

diff --git a/_develop/images/project-prompt.png b/_develop/images/project-prompt.png
new file mode 100644
index 0000000000000000000000000000000000000000..be73acbd4ea9f92abc21b8e0263d5b2491e2bb81
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diff --git a/_develop/zero_to_dapp_1.md b/_develop/zero_to_dapp_1.md
index fc77f2c6..01d5f32b 100644
--- a/_develop/zero_to_dapp_1.md
+++ b/_develop/zero_to_dapp_1.md
@@ -3,37 +3,43 @@ layout: learn
 permalink: /:collection/:path.html
 image: /assets/img/zero-to-dapp.png
 ---
-# 1 - Why Blockchain and Blockstack?
+# 1 About DApps and app mining
 {:.no_toc}
 
-**Zero to DApp, 1 of 4**
+**Zero-to-DApp 1 of 4**
 
-Welcome to the Blockstack Zero to DApp tutorial.  The Blockstack Ecosystem has a
-mission to bring a new internet where users control the access to, and use of,
-their own identity and data.  This tutorial is written for developers who want
-to learn about how to use the Blockstack Ecosystem to develop and fund
-decentralized applications (DApps).
+Welcome to the Blockstack Zero-to-DApp tutorial. In this tutorial, you build,
+run, modify, and deploy a decentralized application (DApp) called Animal
+Kingdom. This application makes use of blockchain technology through the use of
+the Blockstack platform. As you follow along, you'll learn what makes a DApp
+different than traditional applications. You'll also learn about the Blockstack
+Signature Fund and its Application Mining designed to fund DApp development.
 
-The tutorial has four pages and this is first. The top of each page
-lists the contents. This page contains the following:
+The tutorial has four parts of which this is first. This part contains the
+following topics:
 
 * TOC
 {:toc}
 
-Of course, you can skip pages if you want. Each page contains a section
-describing who can or should skip the page. The section contains a link to the next page.
-You can also use the navigation on the left to skip pages.
+### Skills you need to follow this tutorial
+{:.no_toc}
 
-<div class="uk-card uk-card-default uk-card-body">
-<h5>Can you skip this page?</h5>
-<p>In this section, you learn what is a DApp, why you might want to create one, and
-why you would choose the Blockstack ecosystem to do it.  If you are already
-familiar with how decentralized applications are different from standard
-applications and you understand Blockstack’s unique value proposition, skip
-this section and <a href="zero_to_dapp_2.html">move onto 2 of 4 immediately</a>.</p>
-</div>
+This tutorial is written for developers and others who want to learn about DApps
+and how the Blockstack ecosystem supports their development. As a result, the
+target audience is intentionally broad. Anyone with access to a Windows, Mac, or
+Linux computer and some familiarity with a command line should be able to follow
+along.
+
+If you are good at following directions, chances are you can complete this
+tutorial even if you have no programming experience. Knowledgeable developers
+should easily be able to complete the tutorial within an hour by following
+along.
 
-## Blockchain applications, the new kid
+If you are a developer superhero, you may want to skim or move
+quickly through the pages and that's fine too.
+
+
+## How traditional and decentralized applications differ
 
 A decentralized application (DApp) uses blockchain technology for the
 authentication and data storage components of an application’s platform.
@@ -77,7 +83,24 @@ blockchain applications:
 
 The blockchain technology you build a DApp with determines the features available to your application.
 
-## How Blockstack is seeding DApp development
+## Try your first DApp by creating an identity
+
+The Blockstack Web browser is a DApp for the web. Users can use it to create and
+manage identities in the Blockstack Ecosystem.  DApps built with the Blockstack
+platform, use the on-boarding sequence provided by the browser to onboard their
+users.  Currently, users can create a Blockstack ID for free or buy their own
+ID.
+
+If you haven't already created your own Blockstack ID, do this now. As you
+create an ID, consider what interactions are familiar to you from traditional
+applications, and which are not.
+
+{% include create_id.md %}
+
+If you already have a Blockstack ID, launch the browser and try resetting it. Or
+trying logging on from a device or browser software you haven't used before.
+
+## Seeding DApp market with application mining
 
 Blockchain applications are a new paradigm for both application developers and
 application users. New paradigms in any market, think solar power or electric
@@ -86,46 +109,104 @@ and services known as cloud computing were once new paradigms. It was the
 investment of billions in funds and incentives from governments and private
 companies that grew the cloud computing market.  
 
-Today, these same elements are helping to the drive to the blockchain industry.
-Public and private spending on developing blockchain technology is expected to
-grow at a rapid rate. This investment is happening throughout the world as
-reflected in a recent IDC report:
+{% include signature_fund.md %}
 
-> <img class="uk-align-center" src="images/history-cloud.jpg" alt="">
->The IDC expects blockchain spending to grow at a robust pace throughout the
-2017-2022 forecast period with a five-year compound annual growth rate (CAGR) of
-73.2%. Worldwide blockchain spending is expected to be $1.5 billion in 2018,
-double the amount spent in 2017.  
-~ <a href="https://www.idc.com/getdoc.jsp?containerId=prUS44150518" target="\_blank">IDC Blockchain Spending Guide</a>
 
-{% include signature_fund.md %}
+<div class="uk-card uk-card-default uk-card-body">
+<h5>App Mining Eligibility Requirements</h5>
+<p>DApps that are eligible for application mining must:</p>
 
-As you work through this Zero to DApp tutorial, you’ll learn more about the funding available
-through the fund and how you can access it.
+<ul>
+<li>Implement Blockstack authentication</li>
+<li>Store data in a Gaia storage hub</li>
+<li>Invite registration and use by the general public</li>
+</ul>
 
-## Blockchain, no pain
+<p>As you work through this Zero-to-DApp tutorial, you’ll build and deploy a sample
+application that meets these requirements. While the application you build won't
+be eligible for application mining, completing the tutorial makes you
+eligible for a free, limited edition t-shirt:</p>
 
-Blockstack’s mission is to bring about a new internet where users control the
-access to their data and how it is used. With this mission in mind, Blockstack
-Public Benefit Corp. (PBC) started development of the Blockstack platform in 2017.  
+<p><img class="uk-align-center" src="images/tshirt-blank.png" alt=""></p>
 
-The platform’s development philosophy followed two simple principles. First,
-create backend services that allow decentralized applications to be both
-performant and scalable.  Second, provide simple, familiar development
-interfaces to blockchain technology. The result of this philosophy is a
-technology platform that allows you to:
+<p>You'll learn how to get your t-shirt in part 4 of this tutorial.</p>
 
-* **Build your application in any Javascript framework.**  You can use the blockchain without learning a new programming language or extending your application stack.
-* **Use well-defined REST endpoints that simplify and encapsulate the blockchain backend.** The Blockstack Javascript API reduces blockchain operations to familiar GET and PUT operations.
-* **Access the Blockstack’s Naming System (BNS).**  The system has over 90K users that can immediately start using your application.
-* **Scale quickly to large, performant production systems.**  Blockstack’s GAIA storage system gives fast, scalable performance on a level comparable to Amazon S3, Google Drive, or Azure.
+</div>
+
+## Overview of the  DApp you will build
+
+You are going to build a DApp called AnimalKingdom. Animal Kingdom is a DApp for
+the web. Users log into it and create an animal persona that rules over a
+specific territory. The combination of persona and territory is a kingdom. Once
+you create a kingdom, you can add subjects from other kingdoms.
+
+The Animal Kingdom interacts with two Blockstack services, the Blockstack
+Browser (https://browser.blockstack.org) and the Gaia data storage hub
+(https://hub.blockstack.org/). The Blockstack Browser is itself
+a DApp. The storage hub is purely a service without user-facing functionality.
 
-Using Blockstack’s technology you can start building immediately on the
-blockchain with the knowledge you have today.  You won’t need to spend time or
-effort developing additional knowledge of specialized languages or technologies.
+The following table describes the key interactions and screens in the DApp.
+
+<table class="uk-table uk-table-striped">
+  <tr>
+    <th>Click to enlarge</th>
+    <th> Description</th>
+  </tr>
+  <tr>
+    <td><div uk-lightbox="animation: slide">
+         <a class="uk-inline" href="images/kingdom-enter.png" data-caption="Users must login with a Blockstack identity.">
+             <img src="images/kingdom-enter.png" alt="">
+         </a>
+    </div>
+    </td>
+    <td><p>Users log in (authenticate) with a Blockstack identity. By authenticating, the user gives the application the ability to get and put data in the user's Gaia storage hub.</p></td>
+  </tr>
+  <tr>
+    <td><div uk-lightbox="animation: slide">
+          <a class="uk-inline" href="images/kingdom-signin.png" data-caption="Blockstack login dialogs.">
+              <img src="images/kingdom-signin.png" alt="">
+          </a>
+     </div>
+     </td>
+    <td><p>The Blockstack login dialogs are part of the Blockstack Browser which is itself
+    a DApp. Once a user authenticates, the DApp code automatically
+    returns them to the Kingdom they were attempting to enter.</p></td>
+  </tr>
+  <tr>
+  <td><div uk-lightbox="animation: slide">
+    <a class="uk-inline" href="images/kingdom-new.png" data-caption="Choose a persona and territory.">
+        <img src="images/kingdom-new.png" alt="">
+    </a>
+    </div></td>
+  <td><p>First-time visitors to a kingdom are prompted to create an animal persona and
+  a territory to rule. Once they make a selection, users click <strong>Done</strong> to create a
+  kingdom to rule. Behind the scenes, the data about the user's selection is stored in the user's GAIA hub.
+</p>
+  </td>
+</tr>
+<tr>
+  <td> <div uk-lightbox="animation: slide">
+     <a class="uk-inline" href="images/kingdom-choices.gif" data-caption="Choose a persona and territory.">
+      <img src="images/kingdom-choices.gif" alt="">
+    </a>
+   </div></td>
+  <td><p>Each kingdom has animals and territories. Users can edit their original persona/animal combination. You'll learn how to modify the Animal Kingdom code to add new animals and territories.</p></td>
+</tr>
+<tr>
+  <td><div uk-lightbox="animation: slide">
+  <a class="uk-inline" href="images/kingdom-subjects.gif" data-caption="Adding subjects">
+      <img src="images/kingdom-subjects.gif" alt="">
+  </a>
+  </div></td>
+  <td>
+  <p>Users can add subjects from territories in their own Animal Kingdom. The DApp updates the user's GAI hub each time the user adds a subject. Users can also visit other Animal Kingdom installations and add subjects from these as well. You'll learn how to modify the <b>Other Kingdoms</b> available in your installation.
+  </p>
+  </td>
+</tr>
+</table>
 
-In part 3 of this tutorial, you’ll build a sample DApp that leverages all the
-key features of Blockstack’s platform.
+You can try a completed version of this application for yourself by using your
+Blockstack identity to log into the <a href="https://animalkingdoms.netlify.com/" target="\_blank">Blockstack Animal Kingdom</a>.
 
 ## Where to go next
 {:.no_toc}
@@ -141,4 +222,4 @@ different from traditional applications. You’ll also learn about the resources
 Blockstack provides for DApp developers that help you clarify where to put your
 efforts and how to fund them.
 
-Continue to [2 of 4, Zero to DApp](zero_to_dapp_2.html).
+Continue to [2 of 4, Zero-to-DApp](zero_to_dapp_2.html).
diff --git a/_develop/zero_to_dapp_2.md b/_develop/zero_to_dapp_2.md
index cf9da712..384a28a5 100644
--- a/_develop/zero_to_dapp_2.md
+++ b/_develop/zero_to_dapp_2.md
@@ -3,167 +3,325 @@ layout: learn
 permalink: /:collection/:path.html
 image: /assets/img/zero-to-dapp.png
 ---
-# 2 - Discover how DApps are different
+# 2 Learn about the Blockstack platform
 {:.no_toc}
 
-**Zero to DApp, 2 of 4**
+**Zero-to-DApp  2 of 4**
 
-This page explains how DApp user interactions differ from interactions on web
-applications. If you don't have one, you'll also create a Blockstack ID.
-Finally, you'll also learn what industry experts say are fertile grounds for
-DApp development. This page has the following topics:
+In this part, you learn how the Blockstack platform lowers the barriers to
+building with blockchain technology. You'll set up all the prerequisites you
+need to build a typical web DApp. Finally, you'll build and run your own version
+of the Animal Kingdom Dapp introduced in [part 1](zero_to_dapp_1.html). This
+part has the following topics:
 
 * TOC
 {:toc}
 
-<div class="uk-card uk-card-default uk-card-body">
-<h5>Can you skip this page?</h5>
-<p>If you already have a good understanding of how DApps change user
-interactions, have a Blockstack ID, and have a good idea of the DApp you want to develop, skip
-this page and <a href="zero_to_dapp_3.html">move onto 3 of 4 immediately</a>.
-</p>
-</div>
 
-## Get the user perspective on DApps
+## A blockchain platform without pain
 
-![](https://d2mxuefqeaa7sj.cloudfront.net/s_65D38DE36A9E0559639DF0B6F5271AA88578C54592AF9D85F6A7C7F9A62C47D4_1537556532237_image.png)
+Blockstack’s mission is to bring about a new internet where users control the
+access to their data and how it is used. With this mission in mind, Blockstack
+Public Benefit Corp. (PBC) started development of the Blockstack platform in 2017.  
 
-This old proverb is all about how our environment shapes our thinking. As a
-user, you have lived in the centralized application environment for a
-long time. To develop a DApp, you have to shift your thinking to new
-interaction paradigms. You must discover what you don’t know and reimagine
-application interactions.
+The platform’s development philosophy followed two simple principles. First,
+create backend services that allow decentralized applications to be both
+performant and scalable.  Second, provide simple, familiar development
+interfaces to blockchain technology. The result of this philosophy is a
+technology platform that allows you to:
 
-For example, traditional applications allow users to “safely” forget their
-application passwords because they can recover the password and their data
-access from the a central authority. This isn’t true for a DApp. Users must be
-responsible for keeping their own identity access and managing their own data.
-How do you convey this to users?
+* **Build your application in any Javascript framework.**  You can use the blockchain without learning a new programming language or extending your application stack. Currently, Blockstack supports a react generator for web applications and SDKs for both iOS and Android.
+* **Use well-defined REST endpoints that simplify and encapsulate the blockchain backend.** The Blockstack Javascript API reduces blockchain operations to familiar GET and PUT operations.
+* **Access the Blockstack’s Naming System (BNS).**  The system has over 90K users that can immediately start using your application.
+* **Scale quickly to large, performant production systems.**  Blockstack’s GAIA storage system gives fast, scalable performance on a level comparable to Amazon S3, Google Drive, or Azure.
 
-### How Dapp onboarding differs
-{:.no_toc}
+Using Blockstack’s technology you can start building immediately on the
+blockchain with the knowledge you have today.  You won’t need to spend time or
+effort developing additional knowledge of specialized languages or technologies.
 
-Currently, users can create a Blockstack ID for free or buy their own ID. Dapps
-that are submitted for app mining must include Blockstack authentication. This
-authentication includes onboarding flow for users delivered through the
-Blockstack Browser. The language and concepts presented by the flow are
-important for you to understand before writing your own DApp.
+## Get prerequisites and set up your environment
 
-If you haven't already created your own Blockstack ID, do this now. As you
-create an ID, consider what interactions are familiar to you and which are not.
-If you already have a Blockstack ID, launch the browser and try resetting it. Or
-trying logging on from a device or browser software you haven't used before.
+To follow the procedures in the rest of this tutorial, you need the following:
 
-{% include create_id.md %}
+* A Blockstack ID (identity) to test your Animal Kingdom.
+* Access to the Mac terminal window and some familiarity with the command line it provides.
+* An installation of the XCode command-line tools to support Node Package Manager (`npm`)
+* The Node Package Manager package manager.
 
-Once in the browser, investigate the account and locate the storage settings.
-Consider the interaction as both a user and an app designer. Are these settings
-what you expected or would you change them?
+Follow the procedures in this section to install these components.
 
-### Take a user perspective
+### Confirm or get a Blockstack ID
 {:.no_toc}
 
-If you want to solve for an existing, traditional space, you must take time to
-really consider what problems a DApp replacement would solve. But make sure you
-also take the time to consider what challenges your new application has in
-shifting user experiences.
+Confirm you have a Blockstack ID also known as an identity; `joe.id.blockstack`
+is an example of an identity.
 
-- What identity or data ownership features make my application unique or powerful?
-- What typical expectations will users have that must be adjusted?
-- How can my interaction design convey these new features to users so users can succeed?
+* If you have an existing ID, log into the <a href="https://browser.blockstack.org/" target="\_blank">Blockstack Browser</a> in your browser.
 
-As a developer, your understanding of applications is vastly different from a
-standard application user. Prototyping (paper or wireframes) and user testing
-can help you determine if your approach is correct before you begin coding.
+   Logging in confirms you have a valid ID with the required _secret recovery
+   key_ or _magic recovery code_. The secret recovery key is a 12 or 24 word
+   phrase you recorded when you created the ID. The magic recovery code is a
+   string of characters Blockstack emailed to you when you created your
+   identity. You can confirm your identity with either.
 
-1. Choose an application from the Blockstack Browser homepage or from the <a href="https://app.co/" target="\_blank">list on the App.co site</a>.
+* If you do not yet have a Blockstack ID, <a href="https://browser.blockstack.org/" target="\_blank">create one through the Blockstack Browser</a>.
 
-   Blockstack maintains the App.co website as a central place for users and
-   developers to explore and review blockchain applications. This site has
-   application categories such as:
+    Instructions for creating an ID are <a href="{{ site.baseurl
+    }}/browser/ids-introduction.html#create-an-initial-blockstack-id"
+    target="\_blank">available in this documentation</a>.
 
-    - Business Tools
-    - Developer Tools
-    - Education & News
-    - Financial Services
-    - Games & Digital Assets
-    - Social Networking
-    - Health & Fitness
-    - Marketplaces
 
-2. Spend 20 minutes reviewing the application.
+###  Ensure command-line access
+{:.no_toc}
 
-   - Is the application free?
-   - How did the application designers expose or hide decentralized features?
+If you are using a Mac, you can find the **terminal** in the **Application >
+Launchpad > Other** folder.
+
+<img src="images/terminal.png" alt="">
+
+If you don't often use the command line, take a moment to test some common commands.
+
+<table class="uk-table uk-table-small uk-table-divider">
+  <tr>
+    <th>Command</th>
+    <th>What it does</th>
+  </tr>
+  <tr>
+    <td><code>pwd</code></td>
+    <td>Print the name of the working directory; the current directory your command line is in.</td>
+  </tr>
+  <tr>
+    <td><code>ls</code></td>
+    <td>Lists the files and directories in the current directory.</td>
+  </tr>
+  <tr>
+    <td><code>cd</code></td>
+    <td>Change directory to navigate to locations in your file system.</td>
+  </tr>
+</table>
+
+### Install XCode Command Line tools
+{:.no_toc}
 
-3. Try logging into the same application from another device such as your phone.
+The Command Line Tool package gives Mac terminal users many commonly used tools,
+utilities, and compilers. Some of the contents installed by NPM require XCode.
 
-   - You'll need to authenticate on this device with Blockstack too.
-   - How does the mobile experience differ from your desktop experience?
+1. Open a terminal window on your system.
+2. Enter the `xcode-select` command string:
 
-Repeat this exercise with a friend or relative who is not a developer. This
-should give you perspective on the problems users will encounter with your
-potential application.
+   ```bash
+   $ xcode-select --install
+   ```
 
-## Research existing in decentralized applications
+   <img src="images/install-command-line-tools-os-x.jpg" alt="">
 
-![](https://d2mxuefqeaa7sj.cloudfront.net/s_65D38DE36A9E0559639DF0B6F5271AA88578C54592AF9D85F6A7C7F9A62C47D4_1537563661663_image.png)
+   A software update dialog displays:
 
-This quote from Gene Luen Yang, a Genius Grant recipient and comic book artist,
-has a good point. Have you researched what other top industry thinkers have said about
-potential applications of blockchain technology? For example, EY developed a five-point
-test to help determine if a blockchain solution would help for a problem:
+   <img src="images/confirm-install-command-line-tools-mac-os-x.jpg" alt="">
 
-<div class="uk-card uk-card-default uk-card-body">
-<ul> <li>Are there multiple parties in this ecosystem?
-  Blockchains are fundamentally multiparty collaboration systems.</li>
-<li>Is establishing trust between all parties an issue?
-  Blockchains improve trust between participants by having multiple points of verification.</li>
-<li>Is it critical to have a detailed transactional record of activity?
-  If everyone agreed on everything, you wouldn't need a blockchain to verify who did what and when it was done.</li>
-<li>Are we securing the ownership or management of a finite source?
-  Core logic in the blockchain system is designed to prevent double-counting of assets and to record ownership and transfers.</li>
-<li>Does the network of partners benefit from increased transparency across the ecosystem? Blockchains are transparent by design.</li></ul>
+3. Click **Install** to confirm.
 
-<p>From <a href="http://go.galegroup.com/ps/i.do?p=AONE&u=plan_smcl&id=GALE|A547075763&v=2.1&it=r&sid=AONE&asid=f2f8ee00" target="\_blank">Maslova, Natalia. "BLOCKCHAIN: DISRUPTION AND OPPORTUNITY." Strategic Finance, July 2018</a></p>
-</div>
+   You are prompted to agree to the terms of service.
 
-The EY test is a general test about the domains that blockchain applications can disrupt. You can also consider more specific behaviors a DApp should meet. Blockstack defines three principles that Blockstack applications should meet:
+4. Agree to the terms of services.
 
-* Users own their own data
-* Users own their identities
-* Users have free choice of clients
+   The tools are installed. This is fairly quick depending on your connection speed.
 
-If you haven't read it, read the full article <a href="/develop/dapp_principles.html" target="\_blank">on principles of Blockstack applications</a>.
 
-### Tips for coming up with application ideas
+### Install Node Package Manager (NPM)
 {:.no_toc}
 
-Before developing a DApp, research the blockchain space and engage with the Blockstack community.
+Open source developers from every continent use NPM to share software components
+called packages. The Animal Kingdom uses  React, Babel, and many other
+components. You'll use the `npm` command to install these packaged components.
+
+ 1. Open a terminal window on your system.
+ 2. Verify you have installed `npm` using the `which` command.
+
+     <img src="images/command-line.png" alt="">
+
+     If `npm` is installed, `which` returns the command's location in your environment.
+
+3. If the `npm` command is not in your system, <a href="https://www.npmjs.com/get-npm" target="\_blank">install it using the instructions for your operating system</a>.
+
+   Installing the NPM tool can take several minutes depending on your connection speed.
+
+## Get the Animal Kingdom code
+
+In this section, you copy the code for Animal Kingdom to your workstation.
+
+1. In your browser (Chrome, Safari, etc), <a href="https://github.com/blockstack/animal-kingdom" target="\_blank">open the Animal Kingdom code repository</a>.
+
+  The AnimalKingdom code is kept in a public GitHub repository.
+
+2. Click the **Clone or download** button.
+
+  If you have a GitHub account you can choose to clone the original repository
+  or fork it and then clone it. These instructions assume you are downloading
+  the code.
+
+3. Choose the **Download ZIP** for Animal Kingdom.
+
+  <img src="images/kingdom-copy.png" alt="">
+
+3. Check your download directory for the `animal-kingdom-master.zip` file.
+4. Copy the download zip file to a directory where you keep code projects.
+4. Unzip the file.
+
+   <img src="images/kingdom-download.png" alt="">
+
+   After unzipping the file you should have the `animal-kingdom-master` directory.
+
+5. In your terminal change directory into the top of the directory by entering:
+
+   ```bash
+   $ cd animal-kingdom-master
+   ```
+
+   Use the `pwd` command to confirm which directory you are in.
+
+   ```bash
+   $ pwd
+   /Users/manthony/animal-kingdom-master
+   ```
+
+6. Take a minute review the files and subdirectories in your Animal Kingdom project.
+
+   Use the `ls` command to list directory contents.
+
+   <table class="uk-table uk-table-striped">
+   <tr>
+   <th><b>Name</b> </th>
+   <th><b>Description</b></th>
+   </tr>
+   <tr>
+   <td><code>README.md</code></td>
+   <td>Contains a quick reference for building and running Animal Kingdom. </td>
+   </tr>
+   <tr>
+   <td><code>package.json</code></td>
+   <td>An NPM project file.</td>
+   </tr>
+   <tr>
+   <td><code>config</code></td>
+   <td>Environment configuration files written in Javascript.</td>
+   </tr>
+   <tr>
+   <td><code>public</code></td>
+   <td>Files that are copied into the root of the site you are building.</td>
+   </tr>
+   <tr>
+   <td><code>scripts</code></td>
+   <td>NPM scripts used to do common tasks in the project.</td>
+   </tr>
+   <tr>
+   <td><code>src</code></td>
+   <td>React source code for the site.&nbsp;&nbsp;This contains configuration files.</td>
+   </tr>
+   </table>
+
+## Build the sample in development mode
+
+You can build and run the Animal Kingdom on your local workstation. Before you
+can run the program you use NPM to get install all the dependent packages. One
+of the key packages `npm` installs for you is the Blockstack Javascript library.
+
+1. Make sure you are in the root directory of the project.
+
+    ```bash
+    cd ~/animal-kingdom-master
+    pwd
+    /Users/manthony/animal-kingdom-master
+    ```
+
+2. Enter `npm install` to get the software components Animal Kingdom needs.
+
+    ```bash
+     $ npm install
+
+     > fsevents@1.2.4 install /Users/manthony/animal-kingdom-master/node_modules/fsevents
+     > node install
+
+     node-pre-gyp WARN Tried to download(404): https://fsevents-binaries.s3-us-west-2.amazonaws.com/v1.2.4/fse-v1.2.4-node-v67-darwin-x64.tar.gz
+     node-pre-gyp WARN Pre-built binaries not found for fsevents@1.2.4 and node@11.1.0 (node-v67 ABI, unknown) (falling back to source compile with node-gyp)
+      SOLINK_MODULE(target) Release/.node
+      CXX(target) Release/obj.target/fse/fsevents.o
+     In file included from ../fsevents.cc:6:
+
+      ...
+
+     added 1390 packages from 766 contributors and audited 15238 packages in 16.11s
+     found 1 high severity vulnerability
+      run `npm audit fix` to fix them, or `npm audit` for details
+     $
+    ```
+
+    This command creates a `node_modules` subdirectory to your project code and
+    installs all the code libraries you need for your Animal Kingdom project.
+
+3. Enter the `ls` command to list the contents of your project directory to verify `npm` installed correctly.
+
+    ```
+    $ ls
+    ```
+
+    The `node_modules`directory contains many core libraries used by Animal
+    Kingdom. For example, the Blockstack Javascript library is in the
+    `nodule_modules/blockstack/lib` subdirectory.
+
+
+## Start you Animal Kingdom DApp
+
+1. Start the Animal Kingdom DApp running on your workstation by entering:
+
+   ```bash
+   npm start
+   ```
+
+   The `npm` program uses the `scripts/start.js` file to package the Animal
+   Kingdom application. Once the code is packaged, the DApp opens Animal Kingdom
+   running at the `http://localhost:3000` URL in your browser.
+
+2. From the initial Animal Kingdom screen, choose an animal person and a territory.
+3. Press **Done** at the bottom of the page.
+
+   The Animal Kingdom makes a call to the Gaia hub to store your selection.
+   After a brief pause, the DApp returns you to the **Your Kingdom** page. If
+   you have problems,  refresh the page and click **Your Kingdom** in the menu.
+
+   <img src="images/kingdom-ruler.png" alt="">
+
+4. Spend a little time exploring the application.
+
+   For example, you could edit your animal or visit the other pages such as **Animals** or **Territories**.
+
+5. Go back to your terminal where you started your application is running.
+6. Press `CTRL-C` to stop the application.
+
+   <img src="images/kingdom-stop.png" alt="">
+
+You can always start the application again with `npm start` command as you will later in this tutorial.
+
+## Resources for Blockstack developers
+
+Blockstack provides several resources that help developers who are building on
+the Platform. Take a moment to investigate these resources:
 
 * Visit <a href="https://forum.blockstack.org/" target="\_blank">the Blockstack forum</a>.
   This is a valuable resource to learn about the questions that other developers have now or have had in the past.
 * Visit the <a href="https://community.blockstack.org/" target="\_blank">Blockstack Community website</a> to learn about events that may be coming to your area.
 * Join the Blockstack <a href="https://slofile.com/slack/blockstack" target="\_blank"> Slack channel</a> which you can join by filling in the following <a href="https://docs.google.com/forms/d/e/1FAIpQLSed5Mnu0G5ZMJdWs6cTO_8sTJfUVfe1sYL6WFDcD51_XuQkZw/viewform">form</a>.
 
-When coming up with ideas for an application, you can try some thought experiments.
-
-- Imagine if an identity acted as an internet phone number? Could a service pre-screen email so that only those identities that showed an interaction on the blockchain could communicate?
-- How could you use the blockchain to verify reviewers in an application like Yelp? What kind of features would you allow unverified reviewers?
-- How could you use the blockchain to make online dating safer?
-
-A fun game is to use Google to combine the word blockchain with some word you
-think might be unrelated such as juice or zoo. This kind of play can result in
-some surprising finds and interesting ideas.
-
 
 ## Where to go next
 {:.no_toc}
 
-In this section, you learned important areas for consideration and tips for
-where to research. You learned some techniques for formulating and solidifying
-your development efforts. Of course, building an app is a great way to generate
-ideas.
+In this section, you learned about the Blockstack platform and why it makes
+Blockchain development a painless process by encapsulating the complexity of the
+blockstack backend. You also set up a typical development environment for
+developing a Blockstack web application.  Finally, you started and ran the
+Animal Kingdom application locally.
 
-In the next section, you dive into the features of the Blockstack technology by
-developing a sample application. Continue to [Zero to DApp, 3 of 4](zero_to_dapp_3.html).
+In the next section, you explorer the application code and learn which recorded
+elements in a DApp make it eligible for App Mining. Continue to [Zero-to-DApp, 3
+of 4](zero_to_dapp_3.html).
diff --git a/_develop/zero_to_dapp_3.md b/_develop/zero_to_dapp_3.md
index 3ec6b88d..f052fcf1 100644
--- a/_develop/zero_to_dapp_3.md
+++ b/_develop/zero_to_dapp_3.md
@@ -3,379 +3,38 @@ layout: learn
 permalink: /:collection/:path.html
 image: /assets/img/zero-to-dapp.png
 ---
-# 3 - Build an Animal Kingdom DApp
+# 3 Customize your Animal Kingdom
 {:.no_toc}
 
  **Zero to DAPP 3 of 4**
 
-In this page, you follow a tutorial which builds, runs, modifies, and deploys a
-DApp called Animal Kingdom. Through this exercise, you'll learn about the
-components of a Blockstack Dapp.  You'll also learn about the technical
-requirements for submitting a DApp for App.co. This page contains the following
-topics
+In this page, you examine and modify the Animal Kingdom DApp [you built in part
+2](zero_to_dapp_2.html). You'll review the underlying code and locate the
+portions of it which fulfill the requirements necessary to qualify an
+application for App Mining. You'll expand your knowledge of the application by
+extending it. Finally, you'll learn how to deploy a DApp.
+
+This page contains the following topics
 
  * TOC
  {:toc}
 
- <div class="uk-card uk-card-default uk-card-body">
- <h5>Can you skip this page?</h5>
- <p>It isn't a good idea to skip this page, requirements for DApps that participate in App Mining are covered. So, everyone should at least skim through this page.
- </p>
- </div>
-
-
-### Skills you need to build Animal Kingdom
-
-This tutorial is designed for a wide audience. Anyone with access to a Windows,
-Mac, or Linux computer and some familiarity with a command line can build the
-Animal Kingdom DApp.
-
-If you are good at following directions, chances are you can complete this
-tutorial even if you have no programming experience. Knowledgeable developers
-should easily be able to complete the tutorial within an hour by following
-along.
-
-If you are a developer superhero, you may want to skip ahead or move
-quickly and that's fine too.
-
-## Get prerequisites and set up your environment
-
-To follow this tutorial, you need the following:
-
-* A Blockstack ID (identity) to test your Animal Kingdom.
-* Access to the Mac terminal window and some familiarity with the command line it provides.
-* An installation of the XCode command-line tools to support Node Package Manager (`npm`)
-* The Node Package Manager package manager.
-
-Follow the procedures in this section to install these components.
-
-### Confirm or get a Blockstack ID
-{:.no_toc}
-
-Confirm you have a Blockstack ID also known as an identity; `joe.id.blockstack`
-is an example of an identity.
-
-* If you have an existing ID, log into the <a href="https://browser.blockstack.org/" target="\_blank">Blockstack Browser</a> in your browser.
-
-   The Blockstack Browser is itself a DApp. Logging in confirms you have a valid
-   ID with the required _secret recovery key_ or _magic recovery code_. The
-   secret recovery key is a 12 or 24 word phrase you recorded when you created
-   the ID. The magic recovery code is a string of characters Blockstack emailed
-   to you when you created your identity. You can confirm your identity with either.
-
-* If you do not yet have a Blockstack ID, <a href="https://browser.blockstack.org/" target="\_blank">create one through the Blockstack Browser</a>.
-
-    Instructions for creating an ID are <a href="{{ site.baseurl
-    }}/browser/ids-introduction.html#create-an-initial-blockstack-id"
-    target="\_blank">available in this documentation</a>.
-
-
-###  Ensure command-line access
-{:.no_toc}
-
-If you are using a Mac, you can find the **terminal** in the **Application >
-Launchpad > Other** folder.
-
-<img src="images/terminal.png" alt="">
-
-If you don't often use the command line, take a moment to test some common commands.
-
-<table class="uk-table uk-table-small uk-table-divider">
-  <tr>
-    <th>Command</th>
-    <th>What it does</th>
-  </tr>
-  <tr>
-    <td><code>ls</code></td>
-    <td>Lists the files and directories in the current directory.</td>
-  </tr>
-  <tr>
-    <td><code>cd</code></td>
-    <td>Change directory to navigate to locations in your file system.</td>
-  </tr>
-  <tr>
-    <td><code>pwd</code></td>
-    <td>Print the working directory, the location you are working in.</td>
-  </tr>
-</table>
-
-### Install XCode Command Line tools
-{:.no_toc}
-
-The Command Line Tool package gives Mac terminal users many commonly used tools,
-utilities, and compilers. Some of the contents installed by NPM require XCode.
-
-1. Open a terminal window on your system.
-2. Enter the `xcode-select` command string:
-
-   ```bash
-   $ xcode-select --install
-   ```
-
-   <img src="images/install-command-line-tools-os-x.jpg" alt="">
-
-   A software update dialog displays:
 
-   <img src="images/confirm-install-command-line-tools-mac-os-x.jpg" alt="">
-
-3. Click **Install** to confirm.
-
-   You are prompted to agree to the terms of service.
-
-4. Agree to the terms of services.
-
-   The tools are installed. This is fairly quick depending on your connection speed.
-
-
-### Install Node Package Manager (NPM)
+### Before you get started
 {:.no_toc}
 
-Open source developers from every continent use NPM to share software components
-called packages. The Animal Kingdom uses  React, Babel, and many other
-components. You'll use the `npm` command to install these packaged components.
-
- 1. Open a terminal window on your system.
- 2. Verify you have installed `npm` using the `which` command.
-
-     <img src="images/command-line.png" alt="">
-
-     If `npm` is installed, `which` returns the command's location in your environment.
-
-3. If the `npm` command is not in your system, <a href="https://www.npmjs.com/get-npm" target="\_blank">install it using the instructions for your operating system</a>.
-
-   Installing the NPM tool can take several minutes depending on your connection speed.
-
-
-## Overview of the Animal Kingdom DApp
-
-You are going to build a DApp called AnimalKingdom. Animal Kingdom is a DApp for
-the web. Users log into it and create an animal persona that rules over a
-specific territory. The combination of persona and territory is a kingdom. Once
-you create a kingdom, you can add subjects from other kingdoms.
-
-The Animal Kingdom interacts with two Blockstack services, the Blockstack
-Browser (https://browser.blockstack.org) and the Gaia data storage hub
-(https://hub.blockstack.org/). The Blockstack Browser is itself
-a DApp. The storage hub is purely a service without user-facing functionality.
-
-The following table describes the key interactions and screens in the DApp.
-
-<table class="uk-table uk-table-striped">
-  <tr>
-    <th>Click to enlarge</th>
-    <th> Description</th>
-  </tr>
-  <tr>
-    <td><div uk-lightbox="animation: slide">
-         <a class="uk-inline" href="images/kingdom-enter.png" data-caption="Users must login with a Blockstack identity.">
-             <img src="images/kingdom-enter.png" alt="">
-         </a>
-    </div>
-    </td>
-    <td><p>Users log in (authenticate) with a Blockstack identity. By authenticating, the user gives the application the ability to get and put data in the user's Gaia storage hub.</p></td>
-  </tr>
-  <tr>
-    <td><div uk-lightbox="animation: slide">
-          <a class="uk-inline" href="images/kingdom-signin.png" data-caption="Blockstack login dialogs.">
-              <img src="images/kingdom-signin.png" alt="">
-          </a>
-     </div>
-     </td>
-    <td><p>The Blockstack login dialogs are part of the Blockstack Browser which is itself
-    a DApp. Once a user authenticates, the DApp code automatically
-    returns them to the Kingdom they were attempting to enter.</p></td>
-  </tr>
-  <tr>
-  <td><div uk-lightbox="animation: slide">
-    <a class="uk-inline" href="images/kingdom-new.png" data-caption="Choose a persona and territory.">
-        <img src="images/kingdom-new.png" alt="">
-    </a>
-    </div></td>
-  <td><p>First-time visitors to a kingdom are prompted to create an animal persona and
-  a territory to rule. Once they make a selection, users click <strong>Done</strong> to create a
-  kingdom to rule. Behind the scenes, the data about the user's selection is stored in the user's GAIA hub.
-</p>
-  </td>
-</tr>
-<tr>
-  <td> <div uk-lightbox="animation: slide">
-     <a class="uk-inline" href="images/kingdom-choices.gif" data-caption="Choose a persona and territory.">
-      <img src="images/kingdom-choices.gif" alt="">
-    </a>
-   </div></td>
-  <td><p>Each kingdom has animals and territories. Users can edit their original persona/animal combination. You'll learn how to modify the Animal Kingdom code to add new animals and territories.</p></td>
-</tr>
-<tr>
-  <td><div uk-lightbox="animation: slide">
-  <a class="uk-inline" href="images/kingdom-subjects.gif" data-caption="Adding subjects">
-      <img src="images/kingdom-subjects.gif" alt="">
-  </a>
-  </div></td>
-  <td>
-  <p>Users can add subjects from territories in their own Animal Kingdom. The DApp updates the user's GAI hub each time the user adds a subject. Users can also visit other Animal Kingdom installations and add subjects from these as well. You'll learn how to modify the <b>Other Kingdoms</b> available in your installation.
-  </p>
-  </td>
-</tr>
-</table>
-
-
-## Get the Animal Kingdom code
-
-In this section, you copy the code for Animal Kingdom to your workstation.
-
-1. In your browser (Chrome, Safari, etc), <a href="https://github.com/blockstack/animal-kingdom" target="\_blank">open the Animal Kingdom code repository</a>.
-
-   The AnimalKingdom code is kept in a public GitHub repository.
-
-2. Click the **Clone or download** button.
-
-   If you have a GitHub account you can choose to clone the original repository
-   or fork it and then clone it. These instructions assume you are downloading
-   the code.
-
-3. Choose the **Download ZIP** for Animal Kingdom.
-
-   <img src="images/kingdom-copy.png" alt="">
-
-3. Check your download directory for the `animal-kingdom-master.zip` file.
-4. Copy the download zip file to a directory where you keep code projects.
-4. Unzip the file.
+Before you continue, make sure you can locate the key files and
+directories (folders) in your project. You'll need to make sure you have opened
+a terminal and have changed directory to the top of your Animal Kingdom project.
 
-    <img src="images/kingdom-download.png" alt="">
+<img src="images/project-prompt.png" alt="">
 
-    After unzipping the file you should have the `animal-kingdom-master` directory.
+If you find it easier to navigate, you can use the Finder as well. Just remember
+you'll need the command line to run your project.
 
-5. In your terminal change directory into the top of the directory by entering:
+## Understand the Animal Kingdom application code
 
-    ```bash
-    $ cd animal-kingdom-master
-    ```
-
-    Use the `pwd` command to confirm which directory you are in.
-
-    ```bash
-    $ pwd
-    /Users/manthony/animal-kingdom-master
-    ```
-
-6. Take a minute review the files and subdirectories in your Animal Kingdom project.
-
-    Use the `ls` command to list directory contents.
-
-    <table class="uk-table uk-table-striped">
-    <tr>
-    <th><b>Name</b> </th>
-    <th><b>Description</b></th>
-    </tr>
-    <tr>
-    <td><code>README.md</code></td>
-    <td>Contains a quick reference for building and running Animal Kingdom. </td>
-    </tr>
-    <tr>
-    <td><code>package.json</code></td>
-    <td>An NPM project file.</td>
-    </tr>
-    <tr>
-    <td><code>config</code></td>
-    <td>Environment configuration files written in Javascript.</td>
-    </tr>
-    <tr>
-    <td><code>public</code></td>
-    <td>Files that are copied into the root of the site you are building.</td>
-    </tr>
-    <tr>
-    <td><code>scripts</code></td>
-    <td>NPM scripts used to do common tasks in the project.</td>
-    </tr>
-    <tr>
-    <td><code>src</code></td>
-    <td>React source code for the site.&nbsp;&nbsp;This contains configuration files.</td>
-    </tr>
-    </table>
-
-## Build and run the sample in development mode
-
-You can build and run the Animal Kingdom on your local workstation. Before you
-can run the program you use NPM to get all the dependent packages.
-
-1. Make sure you are in the root directory of the project.
-
-   ```bash
-   cd ~/animal-kingdom-master
-   pwd
-   /Users/manthony/animal-kingdom-master
-   ```
-
-2. Enter `npm install` to get the software components Animal Kingdom needs.
-
-   ```bash
-    $ npm install
-
-    > fsevents@1.2.4 install /Users/manthony/animal-kingdom-master/node_modules/fsevents
-    > node install
-
-    node-pre-gyp WARN Tried to download(404): https://fsevents-binaries.s3-us-west-2.amazonaws.com/v1.2.4/fse-v1.2.4-node-v67-darwin-x64.tar.gz
-    node-pre-gyp WARN Pre-built binaries not found for fsevents@1.2.4 and node@11.1.0 (node-v67 ABI, unknown) (falling back to source compile with node-gyp)
-     SOLINK_MODULE(target) Release/.node
-     CXX(target) Release/obj.target/fse/fsevents.o
-    In file included from ../fsevents.cc:6:
-
-     ...
-
-    added 1390 packages from 766 contributors and audited 15238 packages in 16.11s
-    found 1 high severity vulnerability
-     run `npm audit fix` to fix them, or `npm audit` for details
-    $
-   ```
-
-   This command creates a `node_modules` subdirectory to your project code and
-   installs all the code libraries you need for your Animal Kingdom project.
-
-3. Enter the `ls` command to list the contents of your project directory to verify `npm` installed correctly.
-
-   ```
-   $ ls
-   ```
-
-   The `node_modules`directory contains many core libraries used by Animal
-   Kingdom. For example, the Blockstack Javascript library is in the
-   `nodule_modules/blockstack/lib` subdirectory.
-
-4. Start the Animal Kingdom DApp running on your workstation by entering:
-
-   ```bash
-   npm start
-   ```
-
-   The `npm` program compiles the Animal Kingdom code. Once the code compiles,
-   the DApp opens Animal Kingdom running at the  `http://localhost:3000` URL in
-   your browser.
-
-4. From the initial Animal Kingdom screen, choose an animal person and a territory.
-5. Press **Done** at the bottom of the page.
-
-   The Animal Kingdom makes a call to the Gaia hub to store your selection.
-   After a brief pause, the DApp returns you to the **Your Kingdom** page. If
-   you have problems,  refresh the page and click **Your Kingdom** in the
-   menu.
-
-   <img src="images/kingdom-ruler.png" alt="">
-
-6. Spend a little time exploring the application.
-
-   For example, you could edit your animal or visit the other pages such as **Animals** or **Territories**.
-
-7. Go back to your terminal where you started your application is running.
-8. Press `CTRL-C` to stop the application.
-
-   <img src="images/kingdom-stop.png" alt="">
-
-   You can start it again with `npm start` as you will later in this tutorial.
-
-
-## Understand the application code
-
-The application has two major components, React and Blockstack. React is used to
+The Animal Kingdomw application has two major components, React and Blockstack. React is used to
 build all the web components and interactions. You could replace React with any
 framework that you like; Blockstack is web framework agnostic. This section does
 not explain the React in any detail; The discussion focuses on the Blockstack
@@ -388,7 +47,6 @@ Blockstack identity and to read and write to the user's data stored in a Gaia
 hub.
 
 ### Authenticating user identity
-{:.no_toc}
 
 The `src/App.js` file creates a Blockstack `UserSession` and uses that session's
 `isUserSignedIn()` method to determine if the user is signed in or out of the
@@ -461,7 +119,6 @@ for the DApp. Data is encrypted at a unique URL on a GAI storage hub.
 </div>
 
 ### Get and put user data to a GAIA Hub
-{:.no_toc}
 
 GAIA is the Blockstack data storage hub (https://hub.blockstack.org). Once a user
 authenticates, the application can get and put application data in the user's
@@ -511,12 +168,13 @@ saveMe(me) {
 The Blockstack <a href="https://blockstack.github.io/blockstack.js/#putfile"
 target="\_blank"><code>putFile()</code></a> stores the data provided in the
 user's DApp data store. You can view the URL for the data store from a user's
-profile. If you tested your Animal Kingdom, you can see this on your profile.
-To see your profile, go to the <a href="https://explorer.blockstack.org">Blockstack explorer</a> and search for your ID:
+profile.
 
-<img src="images/explorer.png" alt="">
+If you tested your Animal Kingdom, you can see this on your profile. To see your
+profile, go to the <a href="https://explorer.blockstack.org">Blockstack
+explorer</a> and search for your ID:
 
-In the next section, you extend your Kingdom's configuration.
+<img src="images/explorer.png" alt="">
 
 <div class="uk-card uk-card-default uk-card-body">
 <h5>App Mining Requirement: Gaia Storage</h5>
@@ -524,7 +182,7 @@ In the next section, you extend your Kingdom's configuration.
 </p>
 </div>
 
-## Expand your kingdom
+### Application configuration
 
 Your DApp contains three pages **Animals**, **Territories**, and **Other
 Kingdoms** that are derived from three code elements:
@@ -533,11 +191,9 @@ Kingdoms** that are derived from three code elements:
  * The `public/animals` directory which contains images.
  * The `public/territories` directory which contains images.
 
-In this section, you learn how to add another kingdom to the available **Other
-Kingdoms** and how to add another territory.
+In the next section, you extend your Kingdom's configuration by modifying these files.
 
-### Add a territory
-{:.no_toc}
+## Add a territory
 
 If your application is still running in localhost stop it with a `CTRL-C` from
 your keyboard.  
@@ -611,8 +267,7 @@ your keyboard.
 
    <img src="images/kingdom-throne.png" alt="">
 
-### Add the Blockstack kingdom
-{:.no_toc}
+## Add the Blockstack kingdom to Other Kingdoms
 
 Your Animal Kingdom has only recognizes two **Other Kingdoms**. In this section,
 you add a third, the Blockstack kingdom (`https://animalkingdoms.netlify.com`).
@@ -669,11 +324,12 @@ you add a third, the Blockstack kingdom (`https://animalkingdoms.netlify.com`).
 8. Try adding a subject from Moxiegirl's kingdom to yours.
 
 
-## Go live on the Internet
+## Deploy your DApp on the web
 
-In this section you use a free Netlify account and a free GitHub account to take
-your kingdom live on the internet. Netlify provides hosting and serverless
-backend services for static websites. GitHub is a code hosting site.
+So far, you've been running the application locally. This means you are the only
+person that can use it to create a kingdom. You can make your application
+available to others by hosting it out on the internet. You can do this for free
+with a Netlify account.
 
 <div class="uk-card uk-card-default uk-card-body uk-section-muted">
 <h5>App Mining Requirement: Review Accessibility</h5>
@@ -681,14 +337,6 @@ backend services for static websites. GitHub is a code hosting site.
 </p>
 </div>
 
-### Run your Kingdom on the internet
-{:.no_toc}
-
-So far, you've been running the application locally. This means you are the only
-person that can use it to create a kingdom. You can make your application
-available to others by hosting it out on the internet. You can do this for free
-with a Netlify account.
-
 Before you begin, you need to build a site that is ready to deploy.
 
 1. In your terminal, press `CTRL-C` on your keyboard to stop your `npm start` build.
@@ -790,8 +438,7 @@ Before you begin, you need to build a site that is ready to deploy.
     So, the animal kingdom you created on your local workstation is different
     than the one you create on Netlify.
 
-### Add your Kingdom to our Clan
-{:.no_toc}
+## Add your Kingdom to our Clan
 
 At this point, your kingdom is isolated. If you know another kingdom, you can
 add subjects from that kingdom but other kingdoms can't access your subjects. In
@@ -825,9 +472,12 @@ twitter account, why not tell some folks?
 
 <a href="https://twitter.com/share?ref_src=twsrc%5Etfw"
 class="twitter-share-button" data-size="large" data-text="I just built a DApp
-using @blockstack's  Zero to DApp tutorial! " data-hashtags="blockstack,
+using @blockstack's  Zero-to-DApp tutorial! " data-hashtags="blockstack,
 blockchain, blockchainnopain, blockchainnopainblockstack"
 data-show-count="true">Tweet your work!</a><script async
 src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
 
-In the next section, you learn how you can participate in App Mining by submitting a [DApp to App.co &mdash; the Universal App store](zero_to_dapp_4.html).  
+In the next part, you learn about how application mining can fund your DApp
+development efforts. And you will add your Animal Kingdom [DApp to App.co
+&mdash; the Universal App store](zero_to_dapp_4.html) and in doing so, earn a
+limited edition t-shirt.
diff --git a/_develop/zero_to_dapp_3_win.md b/_develop/zero_to_dapp_3_win.md
deleted file mode 100644
index c41d9479..00000000
--- a/_develop/zero_to_dapp_3_win.md
+++ /dev/null
@@ -1,802 +0,0 @@
----
-layout: learn
-permalink: /:collection/:path.html
-image: /assets/img/zero-to-dapp.png
----
-# 3. Build an Animal Kingdom DApp
-{:.no_toc}
-
- **Zero to DAPP 3 of 4**
-
-In this part, you follow a tutorial which builds, runs, and modifies a DAPP
-called Animal Kingdom. Through this exercise, you'll learn about the
-interactions between a Blockstack identity and a DApp. You'll also learn about
-the Blockstack Javascript calls in a typical DApp.
-
- * TOC
- {:toc}
-
-### Skills you need to build Animal Kingdom
-
-This tutorial is designed for a wide audience. Anyone with access to a Windows,
-Mac, or Linux computer and some familiarity with a command line can build the
-Animal Kingdom DApp.
-
-If you are good at following directions, chances are you can complete this
-tutorial even if you have no programming experience. Knowledgeable developers
-should easily be able to complete the tutorial within an hour by following
-along.
-
-If you are a developer superhero, you may want to skip ahead or move
-quickly and that's fine too.
-
-## Get prerequisites and set up your environment
-
-To follow this tutorial, you need the following:
-
-* A Blockstack ID (identity) to test your Animal Kingdom.
-* Access to the Mac terminal window and some familiarity with the command line it provides.
-* An installation of the XCode command-line tools to support Node Package Manager (`npm`)
-* The Node Package Manager package manager.
-
-Follow the procedures in this section to install these components.
-
-### Confirm or get a Blockstack ID
-{:.no_toc}
-
-Confirm you have a Blockstack ID also known as an identity; `joe.id.blockstack`
-is an example of an identity.
-
-* If you have an existing ID, log into the <a href="https://browser.blockstack.org/" target="\_blank">Blockstack Browser</a> in your browser.
-
-   The Blockstack Browser is itself a DApp. Logging in confirms you have a valid
-   ID with the required _secret recovery key_ or _magic recovery code_. The
-   secret recovery key is a 12 or 24 word phrase you recorded when you created
-   the ID. The magic recovery code is a string of characters Blockstack emailed
-   to you when you created your identity. You can confirm your identity with either.
-
-* If you do not yet have a Blockstack ID, <a href="https://browser.blockstack.org/" target="\_blank">create one through the Blockstack Browser</a> .
-
-    Instructions for creating an ID are <a href="{{ site.baseurl }}/browser/ids-introduction.html#create-an-initial-blockstack-id" target="\_blank">available in this documentation</a>.
-
-
-###  Ensure command-line access
-{:.no_toc}
-
-If you are using a Mac, you can find the **terminal** in the **Application >
-Launchpad > Other** folder.
-
-<img src="images/terminal.png" alt="">
-
-If you don't often use the command line, take a moment to test some common commands.
-
-<table class="uk-table uk-table-small uk-table-divider">
-  <tr>
-    <th>Command</th>
-    <th>What it does</th>
-  </tr>
-  <tr>
-    <td><code>ls</code></td>
-    <td>Lists the files and directories in the current directory.</td>
-  </tr>
-  <tr>
-    <td><code>cd</code></td>
-    <td>Change directory to navigate to locations in your file system.</td>
-  </tr>
-  <tr>
-    <td><code>pwd</code></td>
-    <td>Print the working directory, the location you are working in.</td>
-  </tr>
-</table>
-
-### Install XCode Command Line tools
-{:.no_toc}
-
-The Command Line Tool package gives Mac terminal users many commonly used tools,
-utilities, and compilers. Some of the contents installed by NPM require XCode.
-
-1. Open a terminal window on your system.
-2. Enter the `xcode-select` command string:
-
-   ```bash
-   $ xcode-select --install
-   ```
-
-   <img src="images/install-command-line-tools-os-x.jpg" alt="">
-
-   A software update dialog displays:
-
-   <img src="images/confirm-install-command-line-tools-mac-os-x.jpg" alt="">
-
-3. Click **Install** to confirm.
-
-   You are prompted to agree to the terms of service.
-
-4. Agree to the terms of services.
-
-   The tools are installed. This is fairly quick depending on your connection speed.
-
-
-### Install Node Package Manager (NPM)
-{:.no_toc}
-
-Open source developers from every continent use NPM to share software components
-called packages. The Animal Kingdom uses  React, Babel, and many other
-components. You'll use the `npm` command to install these packaged components.
-
-
- 1. Verify you have installed `npm` using the `which` command.
-
-     <img src="images/command-line.png" alt="">
-
-     If `npm` is installed, `which` returns the command's location in your environment.
-
-3. If the `npm` command is not in your system, <a href="https://www.npmjs.com/get-npm" target="\_blank">install it</a>.
-
-   Installing the NPM tool can take several minutes depending on your connection speed.
-
-
-## Overview of the Animal Kingdom DApp
-
-You are going to build a DApp called AnimalKingdom. Animal Kingdom is a DApp for
-the web. Users log into it and create an animal persona that rules over a
-specific territory. The combination of persona and territory is a kingdom. Once
-you create a kingdom, you can add subjects from other kingdoms.
-
-The Animal Kingdom interacts with two Blockstack services, the Blockstack
-Browser (https://browser.blockstack.org) and the Gaia data storage hub
-(https://hub.blockstack.org/). The Blockstack Browser is itself
-a DApp. The storage hub is purely a service without user-facing functionality.
-
-The following table describes the key interactions and screens in the DApp.
-
-<table class="uk-table uk-table-striped">
-  <tr>
-    <th>Click to enlarge</th>
-    <th> Description</th>
-  </tr>
-  <tr>
-    <td><div uk-lightbox="animation: slide">
-         <a class="uk-inline" href="images/kingdom-enter.png" data-caption="Users must login with a Blockstack identity.">
-             <img src="images/kingdom-enter.png" alt="">
-         </a>
-    </div>
-    </td>
-    <td><p>Users log in (authenticate) with a Blockstack identity. By authenticating, the user gives the application the ability to get and put data in the user's Gaia storage hub.</p></td>
-  </tr>
-  <tr>
-    <td><div uk-lightbox="animation: slide">
-          <a class="uk-inline" href="images/kingdom-signin.png" data-caption="Blockstack login dialogs.">
-              <img src="images/kingdom-signin.png" alt="">
-          </a>
-     </div>
-     </td>
-    <td><p>The Blockstack login dialogs are part of the Blockstack Browser which is itself
-    a DApp. Once a user authenticates, the DApp code automatically
-    returns them to the Kingdom they were attempting to enter.</p></td>
-  </tr>
-  <tr>
-  <td><div uk-lightbox="animation: slide">
-    <a class="uk-inline" href="images/kingdom-new.png" data-caption="Choose a persona and territory.">
-        <img src="images/kingdom-new.png" alt="">
-    </a>
-    </div></td>
-  <td><p>First-time visitors to a kingdom are prompted to create an animal persona and
-  a territory to rule. Once they make a selection, users click <strong>Done</strong> to create a
-  kingdom to rule. Behind the scenes, the data about the user's selection is stored in the user's GAIA hub.
-</p>
-  </td>
-</tr>
-<tr>
-  <td> <div uk-lightbox="animation: slide">
-     <a class="uk-inline" href="images/kingdom-choices.gif" data-caption="Choose a persona and territory.">
-      <img src="images/kingdom-choices.gif" alt="">
-    </a>
-   </div></td>
-  <td><p>Each kingdom has animals and territories. Users can edit their original persona/animal combination. You'll learn how to modify the Animal Kingdom code to add new animals and territories.</p></td>
-</tr>
-<tr>
-  <td><div uk-lightbox="animation: slide">
-  <a class="uk-inline" href="images/kingdom-subjects.gif" data-caption="Adding subjects">
-      <img src="images/kingdom-subjects.gif" alt="">
-  </a>
-  </div></td>
-  <td>
-  <p>Users can add subjects from territories in their own Animal Kingdom. The DApp updates the user's GAI hub each time the user adds a subject. Users can also visit other Animal Kingdom installations and add subjects from these as well. You'll learn how to modify the <b>Other Kingdoms</b> available in your installation.
-  </p>
-  </td>
-</tr>
-</table>
-
-
-## Get the Animal Kingdom code
-
-In this section, you copy the code for Animal Kingdom to your workstation.
-
-1. In your browser (Chrome, Safari, etc), <a href="https://github.com/blockstack/animal-kingdom" target="\_blank">open the Animal Kingdom code repository</a>.
-
-   The AnimalKingdom code is kept in a public GitHub repository.
-
-2. Click the **Clone or download** button.
-
-   If you have a GitHub account you can choose to clone the original repository
-   or fork it and then clone it. These instructions assume you are downloading
-   the code.
-
-3. Choose the **Download ZIP** for Animal Kingdom.
-
-   <img src="images/kingdom-copy.png" alt="">
-
-3. Check your download directory for the `animal-kingdom-master.zip` file.
-4. Copy the download zip file to a directory where you keep code projects.
-4. Unzip the file.
-
-    <img src="images/kingdom-download.png" alt="">
-
-    After unzipping the file you should have an `animal-kingdom-master` directory.
-
-5. In your terminal change directory into the top of the directory by entering:
-
-    ```bash
-    $ cd animal-kingdom-master
-    ```
-
-    Use the `pwd` command to confirm which directory you are in.
-
-    ```bash
-    $ pwd
-    /Users/manthony/animal-kingdom-master
-    ```
-
-6. Take a minute review the files and subdirectories in your Animal Kingdom project.
-
-    Use the `ls` command to list directory contents.
-
-    <table class="uk-table uk-table-striped">
-    <tr>
-    <th><b>Name</b> </th>
-    <th><b>Description</b></th>
-    </tr>
-    <tr>
-    <td><code>README.md</code></td>
-    <td>Contains a quick reference for building and running Animal Kingdom. </td>
-    </tr>
-    <tr>
-    <td><code>package.json</code></td>
-    <td>An NPM project file.</td>
-    </tr>
-    <tr>
-    <td><code>config</code></td>
-    <td>Environment configuration files written in Javascript.</td>
-    </tr>
-    <tr>
-    <td><code>public</code></td>
-    <td>Files that are copied into the root of the site you are building.</td>
-    </tr>
-    <tr>
-    <td><code>scripts</code></td>
-    <td>NPM scripts used to do common tasks in the project.</td>
-    </tr>
-    <tr>
-    <td><code>src</code></td>
-    <td>Vue.js code source code for the site.&nbsp;&nbsp;This contains configuration files.</td>
-    </tr>
-    </table>
-
-## Build and run the sample in development mode
-
-You can build and run the Animal Kingdom on your local workstation. Before you
-can run the program you use NPM to get all the dependent packages.
-
-1. Make sure you are in the root directory of the project.
-
-   ```bash
-   cd ~/animal-kingdom-master
-   pwd
-   /Users/manthony/animal-kingdom-master
-   ```
-
-2. Enter `npm install` to get the software components Animal Kingdom needs.
-
-   ```bash
-    $ npm install
-
-    > fsevents@1.2.4 install /Users/manthony/animal-kingdom-master/node_modules/fsevents
-    > node install
-
-    node-pre-gyp WARN Tried to download(404): https://fsevents-binaries.s3-us-west-2.amazonaws.com/v1.2.4/fse-v1.2.4-node-v67-darwin-x64.tar.gz
-    node-pre-gyp WARN Pre-built binaries not found for fsevents@1.2.4 and node@11.1.0 (node-v67 ABI, unknown) (falling back to source compile with node-gyp)
-     SOLINK_MODULE(target) Release/.node
-     CXX(target) Release/obj.target/fse/fsevents.o
-    In file included from ../fsevents.cc:6:
-
-     ...
-
-    added 1390 packages from 766 contributors and audited 15238 packages in 16.11s
-    found 1 high severity vulnerability
-     run `npm audit fix` to fix them, or `npm audit` for details
-    $
-   ```
-
-   This command creates a `node_modules` subdirectory to your project code and
-   installs all the code libraries you need for your Animal Kingdom project.
-
-3. Enter the `ls` command to list the contents of your project directory to verify `npm` installed correctly.
-
-   ```
-   $ ls
-   ```
-
-   The `node_modules`directory contains many core libraries used by Animal
-   Kingdom. For example, the Blockstack Javascript library is in the
-   `nodule_modules/blockstack/lib` subdirectory.
-
-4. Start the Animal Kingdom DApp running on your workstation by entering:
-
-   ```bash
-   npm start
-   ```
-
-   The `npm` program compiles the Animal Kingdom code. Once the code compiles,
-   the DApp opens Animal Kingdom running at the  `http://localhost:3000` URL in
-   your browser.
-
-4. From the initial Animal Kingdom screen, choose an animal person and a territory.
-5. Press **Done** at the bottom of the page.
-
-   The Animal Kingdom makes a call to the Gaia hub to store your selection.
-   After a brief pause, the DApp returns you to the **Your Kingdom** page. If
-   you have problems,  refresh the page and click **Your Kingdom** in the
-   menu.
-
-   <img src="images/kingdom-ruler.png" alt="">
-
-6. Spend a little time exploring the application.
-
-   For example, you could edit your animal or visit the other pages such as **Animals** or **Territories**.
-
-7. Go back to your terminal where you started you application is running.
-8. Press `CTRL-C` to stop the application.
-
-   <img src="images/kingdom-stop.png" alt="">
-
-   You can start it again with `npm start` as you will later in this tutorial.
-
-
-## Understand the application code
-
-The application has two major components, React and Blockstack. React is used to
-build all the web components and interactions. You could replace React with any
-framework that you like; Blockstack is web framework agnostic. This section does
-not explain the React in any detail; The discussion focuses on the Blockstack
-Javascript library the DApp instead.
-
-The <a href="https://blockstack.github.io/blockstack.js/"
-target="\_blank">Blockstack Javascript library is all a developer needs to
-create a DApp. It grants</a> the application the ability to authenticate a
-Blockstack identity and to read and write to the user's data stored in a Gaia
-hub.
-
-### Authenticating user identity
-{:.no_toc}
-
-The `src/App.js` file creates a Blockstack `UserSession` and uses that session's
-`isUserSignedIn()` method to determine if the user is signed in or out of the
-application. Depending on the result of this method. The application redirects
-to the `src/SignedIn` page or to the `src/Landing.js` page.
-
-```js
- import React, { Component } from 'react'
- import './App.css'
- import { UserSession } from 'blockstack'
-
- import Landing from './Landing'
- import SignedIn from './SignedIn'
-
- class App extends Component {
-
-   constructor() {
-     super()
-     this.userSession = new UserSession()
-   }
-
-   componentWillMount() {
-     const session = this.userSession
-     if(!session.isUserSignedIn() && session.isSignInPending()) {
-       session.handlePendingSignIn()
-       .then((userData) => {
-         if(!userData.username) {
-           throw new Error('This app requires a username.')
-         }
-         window.location = `/kingdom/${userData.username}`
-       })
-     }
-   }
-
-   render() {
-     return (
-       <main role="main">
-           {this.userSession.isUserSignedIn() ?
-             <SignedIn />
-           :
-             <Landing />
-           }
-       </main>
-     );
-   }
- }
-
- export default App
-```
-
-The first time you start the application, this code determines if the user has
-signed into the DApp previously. If not, it opens the  `Landing.js` page. This
-page offers the user an opportunity to **Sign in to Blockstack**.
-
-Clicking the button ends up calling the `redirectToSignIn()` method which generates an
-authentication request and redirects the user to the Blockstack browser to
-approve the sign in request. The actual Blockstack sign-in dialog depends on
-whether the user already has an existing session in the Blockstack Browser.
-
-<img src="images/kingdom_notin.png" alt="">
-
-Signing in with an identity is the means by which the user grants the DApp
-access. Access means the DApp can read the user profile and read/write user data
-for the DApp. Data is encrypted at a unique URL on a GAI storage hub.
-
-### Get and put user data to a GAIA Hub
-{:.no_toc}
-
-GAI is the Blockstack data storage hub (https://hub.blockstack.org). Once a user
-authenticates, the application can get and put application data in the user's
-storage. After a user signs in, the `SignedIn.js` code checks the user's GAI
-profile by running the `loadMe()` method.
-
-```js
-loadMe() {
-    const options = { decrypt: false }
-    this.userSession.getFile(ME_FILENAME, options)
-    .then((content) => {
-      if(content) {
-        const me = JSON.parse(content)
-        this.setState({me, redirectToMe: false})
-      } else {
-        const me = null
-
-        this.setState({me, redirectToMe: true})
-      }
-    })
-  }
-```
-
-The `loadMe()` code uses the Blockstack's `getFile()` method to get the
-specified file from the applications data store. If the users' data store on
-GAIA does not have the data, which is the case for a new users, the Gaia hub
-responds with HTTP `404` code and the `getFile` promise resolves to null. If you
-are using a Chrome Developer Tools with the DApp, you'll see these errors in a
-browser's developer **Console**.
-
-<img src="images/kingdom-errors.png" alt="">
-
-After a user choses an animal persona and a territory, the user presses **Done**
-and the application stores the user data on GAIA.
-
-```js
-saveMe(me) {
-  this.setState({me, savingMe: true})
-  const options = { encrypt: false }
-  this.userSession.putFile(ME_FILENAME, JSON.stringify(me), options)
-  .finally(() => {
-    this.setState({savingMe: false})
-  })
-}
-```
-
-The Blockstack <a href="https://blockstack.github.io/blockstack.js/#putfile"
-target="\_blank"><code>putFile()</code></a> stores the data provided in the
-user's DApp data store. You can view the URL for the data store from a user's
-profile. If you tested your Animal Kingdom, you can see this on your profile.
-To see your profile, go to the Blockstack explorer and search for your ID:
-
-<img src="images/explorer.png" alt="">
-
-In the next section, you extend your Kingdom's configuration.
-
-## Expand your kingdom
-
-Your DApp contains three pages **Animals**, **Territories**, and **Other
-Kingdoms** that are derived from three code elements:
-
- * The `src/constants.js` file defines the application's data profile.
- * The `public/animals` directory which contains images.
- * The `public/territories` directory which contains images.
-
-In this section, you learn how to add another kingdom to the available **Other
-Kingdoms** and how to add another territory.
-
-### Add a territory
-{:.no_toc}
-
-If your application is still running in localhost stop it with a `CTRL-C` from
-your keyboard.  
-
-1. Decide what kind of territory to add &emdash; desert, ocean, or city!
-
-   This example adds Westeros, a fictional territory.
-
-2. Search for an image to represent your new territory.
-
-   Google images is a good place to find <a href="images/westeros.jpg" target="\_blank">a JPEG image of Westeros</a>.
-
-3. Save the image to the `public/territories` folder in your Animal Kingdom project code.
-
-   {% include warning.html content="The territory filename must be all lower case and have a <code>.jpg</code> extension.
-   For this example, the territory image is saved in the <code>westeros.jpg</code> file." %}
-
-4. Use the `ls` command to confirm your file appears in `territories` directory and has the correct name.
-
-   ```bash
-   ls public/territories/
-   forest.jpg   tundra.jpg   westeros.jpg
-   ```
-
-4. Open the `src/constant.js` file in your favorite editor.
-5. Scroll down to the section that defines the **Territories**.
-
-   ```js
-   export const TERRITORIES = [
-     {
-       id: 'forest',
-       name: 'Forest',
-       superpower: 'Trees!'
-     },
-     {
-       id: 'tundra',
-       name: 'Tundra',
-       superpower: 'Let it snow!'
-     }
-   ]
-   ```
-
-6. Add your new territory.
-
-   ```js
-   export const TERRITORIES = [
-     {
-       id: 'forest',
-       name: 'Forest',
-       superpower: 'Trees!'
-     },
-     {
-       id: 'tundra',
-       name: 'Tundra',
-       superpower: 'Let it snow!'
-     },
-     {
-       id: 'westeros',
-       name: 'Westeros',
-       superpower: 'The Iron Throne!'
-     }
-    ]
-    ```
-7. Save and close the `contstant.js` file.
-8. Back in a terminal window, restart your application.
-
-   ```bash
-   $ npm start
-   ```
-9. After the application starts, navigate to the **Territories** page and look for your `Westeros` territory.
-
-   <img src="images/kingdom-throne.png" alt="">
-
-### Add the Blockstack kingdom
-{:.no_toc}
-
-Your Animal Kingdom has only recognizes two **Other Kingdoms**. In this section,
-you add a third, the Blockstack kingdom (`https://animalkingdoms.netlify.com`).
-
-1. Open the `src/constant.js` file in your favorite editor.
-
-   On Mac you can use TextEdit or Vim.
-
-2. Scroll down to the section that defines the **Other Kingdoms**
-
-   ```js
-   export const OTHER_KINGDOMS = [
-     {
-       app: 'https://animal-kingdom-1.firebaseapp.com',
-       ruler: 'larry.id'
-     },
-     {
-       app: 'http://localhost:3001',
-       ruler: 'larz.id'
-     }
-   ]
-   ```
-
-   To add a kingdom, you need its URL and the ID of its owner.
-
-3. Edit the file and add the `https://animalkingdoms.netlify.com` which is owned by `moxiegirl.id.blockstack`.
-
-   When you are done the file will look like this.
-
-
-   ```js
-   export const OTHER_KINGDOMS = [
-     {
-       app: 'https://animal-kingdom-1.firebaseapp.com',
-       ruler: 'larry.id'
-     },
-     {
-       app: 'http://localhost:3001',
-       ruler: 'larz.id'
-     },
-     {
-       app: 'https://animalkingdoms.netlify.com',
-       ruler: 'moxiegirl.id.blockstack'
-     }
-   ]
-   ```
-
-4. Save and close the `constants.js` file.
-5. Back in your browser, navigate to the **Other Kingdoms** page.
-
-   <img src="images/kingdom-moxiegirl.png" alt="">
-
-7. Got to the `moxiegirl` kingdom by clicking on her kingdom.
-8. Try adding a subject from Moxiegirl's kingdom to yours.
-
-
-## Go live on the Internet
-
-In this section you use a free Netlify account and a free GitHub account to take
-your kingdom live on the internet. Netlify provides hosting and serverless
-backend services for static websites. GitHub is a code hosting site.
-
-### Run your Kingdom on the internet
-{:.no_toc}
-
-So far, you've been running the application locally. This means you are the only
-person that can use it to create a kingdom. You can make your application
-available to others by hosting it out on the internet. You can do this for free
-with a Netlify account.
-
-Before you begin, you need to build a site that is ready to deploy.
-
-1. In your terminal, press `CTRL-C` on your keyboard to stop your `npm start` build.
-2. Build a website from your code by entering the `npm run build` command:
-
-   ```bash
-   npm run build
-   ```
-
-   <img src="images/run-build.png" alt="">
-
-   When the command completes, you should have a new `build` subdirectory in your project.
-
-3. Open your project in the Finder.
-4. Locate the newly created `build` subfolder.
-
-   <img src="images/finder-build.png" alt="">
-
-5. <a href="https://app.netlify.com/signup" target="\_blank">Sign up for a free Netlify account</a>
-
-   <img src="images/netlify-account.gif" alt="">
-
-6. In your email inbox, find Netlify's welcome email and verify your account.
-
-   <img src="images/netlify-verify.png" alt="">
-
-7. Log into Netlify and go to the **Overview** page in your browser.
-8. Drag your `build` subdirectory from the Finder into the drop zone in Netlify.
-
-   <img src="images/netlify-deploy.gif" alt="">
-
-   After a moment, Netlify builds your code and displays the location of your new webiste.
-
-   <img src="images/kingdom-build.png" alt="">
-
-9. Click on your website name to display the website.
-
-   You are prompted to sign into this new site with your Blockstack ID.
-
-10. Click **Sign in with Blockstack**.
-
-    After you sign in, your website presents you with this message:
-
-    <img src="images/kingdom-failed.png" alt="">   
-
-    You get this message because, when you authenticates, your DApp at one URL
-    requested a resource (an identity) from another DApp, the Blockstack
-    Browser. A request for a resource outside of the origin (your new website)
-    is called as a _cross-origin request_(CORs). Getting data in this manner can
-    be risky, so you must configure your website security to allow interactions
-    across origins.
-
-    <div class="uk-inline">
-    <button class="uk-button uk-button-primary" enter="button">Read a bit more, fun, explanation of CORS</button>
-    <div uk-dropdown>
-    You can think of CORS interactions as an apartment building with Security.
-    For example, if you need to borrow a ladder, you could ask a neighbor in
-    your building who has one. Security would likely not have a problem with
-    this request (i.e., same-origin, your building). If you needed a particular
-    tool, however, and you ordered it delivered from an online hardware store
-    (i.e., cross-origin, another site), Security may request identificatin
-    before allowing the delivery man into the apartment building.
-    <br>
-    Credit: <a href="https://www.codecademy.com/articles/what-is-cors" target="\_blank">Codecademy</a>
-    </div>
-    </div>
-
-    The way you configure CORs depends on which company is serving your website.
-    You are using Netlify for this example.
-
-11. Locate the `cors/_headers` and `cors/_redirects` in your project.
-
-    You can use the Finder or the `ls` command.
-
-
-12. Copy them into your `public` directory.
-
-    To copy them with the `ls` command, enter the following in the root of the `animal-kingdom-master` project.
-
-    ```bash
-    cp cors/_headers public
-    cp cors/_redirects public
-    ```
-
-    The name of each file, with the underscore, is essential.
-
-13. Make sure you are in the `animal-kingdom-master` directory, run the `npm run build` command again.
-15. Drag the `build` file back into the Netlify drop zone.
-
-    After a moment, Netlify publishes your site. Check the published location, it may have changed.
-
-16. Click on the link and log into your Animal Kingdom.
-17. Recreate your animal person and territory.
-
-    The Animal Kingdom is identified by its location on the Internet, remember?
-    So, the animal kingdom you created on your local workstation is different
-    than the one you create on Netlify.
-
-### Add your Kingdom to our Clan
-{:.no_toc}
-
-At this point, your kingdom is isolated. If you know another kingdom, you can
-add subjects from that kingdom but other kingdoms can access your subjects. In
-this section, you use a free GitHub account to add your kingdom to the
-Blockstack kingdom.
-
-1. If you have a GitHub account, go to step 2 otherwise go to GitHub <a href="https://github.com/" target="\_blank">site and create a new account</a>.  
-2. Go to the <a href="https://github.com/blockstack/animal-kingdom/issues" target="\_blank">https://github.com/blockstack/animal-kingdom/issues</a> repository on Github.
-2. Click **New Issue**.
-
-   The new issue dialog appears.
-
-3. Fill out the issue with the URL from Netlify and your Blockstack id.
-
-   When you are done, your issue will look like the following:
-
-   <img src="images/kingdom-issue.png" alt="">
-
-4. Press **Submit new issue**.
-
-   The Blockstack team will add your Netlify kingdom to ours. When we do that, we will notify you on the issue and you'll also get an email.
-
-5. When you receive the email, login into the Blockstack Animal kingdom to see your kingdom under **Other Kingdoms**.
-
-
-## Next Steps
-{:.no_toc}
-
-Well, you have produced your very first DApp. Congratulations! If you have a
-twitter account, why not tell some folks?
-
-<a href="https://twitter.com/share?ref_src=twsrc%5Etfw"
-class="twitter-share-button" data-size="large" data-text="I just built a DApp
-using @blockstacks's  Zero to DApp tutorial! " data-hashtags="blockstack,
-blockchain, blockchainnopain, blockchainnopainblockstack"
-data-show-count="false">Tweet your work!</a><script async
-src="https://platform.twitter.com/widgets.js" charset="utf-8"></script> |
-
-In the next section, you submit your [DApp to our listings on App.co](#).  
diff --git a/_develop/zero_to_dapp_4.md b/_develop/zero_to_dapp_4.md
index 82f7e2f6..1cf92e17 100644
--- a/_develop/zero_to_dapp_4.md
+++ b/_develop/zero_to_dapp_4.md
@@ -3,26 +3,21 @@ layout: learn
 permalink: /:collection/:path.html
 image: /assets/img/zero-to-dapp.png
 ---
-# 4 - Participate in App Mining
+# 4 List and fund thru App.co
 {:.no_toc}
 
  **Zero to DAPP 4 of 4**
 
-On this page, you learn about application mining as a funding source for your
+In this part, you learn about application mining as a funding source for your
 new DApp efforts. You'll submit your sample Animal Kingdom to App.co, the
 Universal DApp store and earn a t-shirt. You'll also learn about other ways
-Blockstack helps your development efforts. This page contains the following topics:
+Blockstack helps your development efforts. This part contains the following topics:
 
 * TOC
 {:toc}
 
-
-<div class="uk-card uk-card-default uk-card-body">
-<h5>Can you skip this page?</h5>
-<p>This is the final page, so please don't skip it. You don't miss your chance to get this cool t-shirt!
-</p>
-<p><img class="uk-align-center" src="images/tshirt-blank.png" alt=""></p>
-</div>
+This page assumes you have customized and deployed your Animal Kingdom as
+[described in part 3](zero_to_dapp_3).
 
 ## Understand application mining
 
@@ -41,7 +36,7 @@ You can also submit an application for app mining but not add it to App.co.
 
 In this section, you add your Animal Kingdom to the **Blockstack Sample
 Application** category on App.co.  Adding your Animal Kingdom app to this
-category earns you a limited edition a Zero to DApp t-shirt. Only submit your
+category earns you a limited edition a Zero-to-DApp t-shirt. Only submit your
 sample application if you have deployed the application on the internet. This
 allows us to confirm you completed the tutorial. You can submit more than one
 example, only your first submission receives a t-shirt.
@@ -128,7 +123,7 @@ To submit an application for app mining, do the follwoing:
 2. Select the **Submit your app for qualification** button.
 
 
-## Marketing your DApp
+## How Blockstack helps App Miners market
 
 Blockstack reviews each submission to app mining. Through this contact, Blockstack helps
 developers refine business models and facilitating interactions with investors.
@@ -150,7 +145,7 @@ Learn more about <a href="https://blockstack.org/blog/blockstack-community-rewar
 ## Congratulations
 {:.no_toc}
 
-You've completed the Zero to DApp tutorial and have joined the growing
+You've completed the Zero-to-DApp tutorial and have joined the growing
 DApp developer community on Blockstack. We hope you've taken the extra
 step of submitting your Animal Kingdom application to the App.co site.