Add nav and use markdown references format for links

Author: chrisreddington

content/full-day/README.md

@@ -1,14 +1,17 @@
 # Modern DevOps with GitHub
 
-[DevOps](https://en.wikipedia.org/wiki/DevOps) is a [portmanteau](https://www.merriam-webster.com/dictionary/portmanteau) of **development** and **operations**. At its core is a desire to bring development practices more inline with operations, and operations practices more inline with development. This fosters better communication and collaboration between teams, breaks down barriers, and gives everyone an investment in ensuring customers are delighted by the software we ship.
+| [← Pets workshop selection][walkthrough-previous] | [Next: Workshop setup →][walkthrough-next] |
+|:-----------------------------------|------------------------------------------:|
+
+[DevOps][devops] is a [portmanteau][portmanteau] of **development** and **operations**. At its core is a desire to bring development practices more inline with operations, and operations practices more inline with development. This fosters better communication and collaboration between teams, breaks down barriers, and gives everyone an investment in ensuring customers are delighted by the software we ship.
 
 This workshop is built to help guide you through some of the most common DevOps tasks on GitHub. You'll explore:
 
-- Managing projects with [GitHub Issues](https://github.com/features/issues)
-- Creating a development environment with [GitHub Codespaces](https://github.com/features/codespaces)
-- Using [GitHub Copilot](https://github.com/features/copilot) as your AI pair programmer
-- Securing the development pipeline with [GitHub Advanced Security](https://github.com/features/security)
-- Automating tasks and CI/CD with [GitHub Actions](https://github.com/features/actions)
+- Managing projects with [GitHub Issues][github-issues]
+- Creating a development environment with [GitHub Codespaces][github-codespaces]
+- Using [GitHub Copilot][github-copilot] as your AI pair programmer
+- Securing the development pipeline with [GitHub Advanced Security][github-security]
+- Automating tasks and CI/CD with [GitHub Actions][github-actions]
 
 ## Prerequisites
 
@@ -18,19 +21,41 @@ The application for the workshop uses is built primarily with Python (Flask and
 
 To complete this workshop, you will need the following:
 
-- A [GitHub account](https://github.com/join)
-- Access to [GitHub Copilot](https://github.com/features/copilot)
+- A [GitHub account][github-signup]
+- Access to [GitHub Copilot][github-copilot]
 
 ## Getting started
 
 Ready to get started? Let's go! The workshop scenario imagines you as a developer volunteering your time for a pet adoption center. You will work through the process of creating a development environment, creating code, enabling security, and automating processes.
 
-0. [Setup your environment](exercises/0-setup.md) for the workshop
-1. [Enable Code Scanning](exercises/1-code-scanning.md) to ensure new code is secure
-2. [Create an issue](exercises/2-issues.md) to document a feature request
-3. [Create a codespace](exercises/3-codespaces.md) to start writing code
-4. [Implement testing](exercises/4-testing.md) to supplement continuous integration
-5. [Provide Copilot context](exercises/5-context.md) to generate quality code suggestions
-6. [Add features to your app](exercises/6-code.md) with GitHub Copilot
-7. [Use the GitHub flow](exercises/7-github-flow.md) to incorporate changes into your codebase
-8. [Deploy your application](exercises/8-deployment.md) to Azure to make your application available to users
+0. [Setup your environment][walkthrough-next] for the workshop
+1. [Enable Code Scanning][code-scanning] to ensure new code is secure
+2. [Create an issue][issues] to document a feature request
+3. [Create a codespace][codespaces] to start writing code
+4. [Implement testing][testing] to supplement continuous integration
+5. [Provide Copilot context][context] to generate quality code suggestions
+6. [Add features to your app][code] with GitHub Copilot
+7. [Use the GitHub flow][github-flow] to incorporate changes into your codebase
+8. [Deploy your application][deployment] to Azure to make your application available to users
+
+| [← Pets workshop selection][walkthrough-previous] | [Next: Workshop setup →][walkthrough-next] |
+|:-----------------------------------|------------------------------------------:|
+
+[code]: ./6-code.md
+[code-scanning]: ./1-code-scanning.md
+[codespaces]: ./3-codespaces.md
+[context]: ./5-context.md
+[deployment]: ./8-deployment.md
+[devops]: https://en.wikipedia.org/wiki/DevOps
+[github-actions]: https://github.com/features/actions
+[github-codespaces]: https://github.com/features/codespaces
+[github-copilot]: https://github.com/features/copilot
+[github-flow]: ./7-github-flow.md
+[github-issues]: https://github.com/features/issues
+[github-security]: https://github.com/features/security
+[github-signup]: https://github.com/join
+[issues]: ./2-issues.md
+[portmanteau]: https://www.merriam-webster.com/dictionary/portmanteau
+[testing]: ./4-testing.md
+[walkthrough-next]: ./0-setup.md
+[walkthrough-previous]: ../README.md