Update to X in STEP and README.md

.github/steps/-step.txt

@@ -1 +1 @@
-4
+X

README.md

@@ -16,85 +16,38 @@ _Develop code using GitHub Codespaces and Visual Studio Code!_
 </header>
 
 <!--
-  <<< Author notes: Step 4 >>>
-  Start this step by acknowledging the previous step.
-  Define terms and link to docs.github.com.
+  <<< Author notes: Finish >>>
+  Review what we learned, ask for feedback, provide next steps.
 -->
 
-## Step 4: Personalize your codespace!
+## Finish
 
-_Nicely done customizing your codespace!_ :partying_face:
+_Congratulations friend, you've completed this course!_
 
-When using any development environment, customizing the settings and tools to your preferences and workflows is an important step. GitHub Codespaces offers two main ways of personalizing your codespace: `Settings Sync` with VS Code and `dotfiles`.
+<img src="https://octodex.github.com/images/welcometocat.png" alt=celebrate width=300 align=right>
 
-`Dotfiles` will be the focus of this activity.
+Here's a recap of all the tasks you've accomplished in your repository:
 
-**What are `dotfiles`?** Dotfiles are files and folders on Unix-like systems starting with . that control the configuration of applications and shells on your system. You can store and manage your dotfiles in a repository on GitHub.
+- You learned how to create a codespace and push code to your repository from the codespace.
+- You learned how to use custom images in your codespace.
+- You learned how to customize your codespace.
+- You learned how to personalize your codespace.
 
-Let's see how this works!
+### Additional learning and resources
 
-### :keyboard: Activity: Enable a `dotfile` for your codespace
+- [Developing in a codespace](https://docs.github.com/en/codespaces/developing-in-codespaces/developing-in-a-codespace). Learn how to delete a codespace, open an existing codespace, connect to a private network, forward ports, and much more.
+- [Set up your repository](https://docs.github.com/en/codespaces/setting-up-your-project-for-codespaces/introduction-to-dev-containers). Learn how to set minimum machine specs for a codespace, add badges, set up a template repo, and much more.
+- [Personalize and customize GitHub Codespaces](https://docs.github.com/en/codespaces/customizing-your-codespace/personalizing-github-codespaces-for-your-account). Learn how to use setting sync for your codespace, add dotfiles, set the default region, set the default editor, and much more.
+- [Prebuild your codespace](https://docs.github.com/en/codespaces/prebuilding-your-codespaces/about-github-codespaces-prebuilds)
+- [Manage your codespace](https://docs.github.com/en/codespaces/managing-codespaces-for-your-organization/enabling-github-codespaces-for-your-organization)
 
-1. Start from the landing page of your repository.
-1. In the upper-right corner of any page, click your profile photo, and then click **Settings**.
-1. In the **Code, planning, and automation** section of the sidebar, click **Codespaces**.
-1. Under **Dotfiles**, select **Automatically install dotfiles** so that GitHub Codespaces automatically installs your dotfiles into every new codespace you create.
-1. Click **Select repository** and then choose your current skills working repository as the repository from which to install dotfiles.
+### What's next?
 
-### :keyboard: Activity: Add a `dotfile` to your repository and run your codespace
-
-1. Start from the landing page of your repository.
-1. Click the **Code** button located in the middle of the page.
-1. Click the **Codespaces** tab on the box that pops up.
-1. Click the **Create codespace on main** button.
-
-   > Wait about **2 minutes** for the codespace to spin itself up.
-
-1. Verify your codespace is running. The browser should contain a VS Code web-based editor and a terminal should be present such as the below:
-
-   ![codespace1](https://user-images.githubusercontent.com/26442605/207355196-71aab43f-35a9-495b-bcfe-bf3773c2f1b3.png)
-
-1. From inside the codespace in the VS Code explorer window, create a new file `setup.sh`.
-1. Add the following code inside of the file:
-
-   ```bash
-   #!/bin/bash
-
-   sudo apt-get update
-   sudo apt-get install sl
-   ```
-
-1. Save the file.
-   > **Note**: The file should autosave.
-1. Commit the file changes. From the VS Code terminal enter:
-
-   ```shell
-   git add setup.sh --chmod=+x
-   git commit -m "Adding setup.sh from the codespace!"
-   ```
-
-1. Push the changes back to your repository. From the VS Code terminal, enter:
-
-   ```shell
-   git push
-   ```
-
-1. Switch back to the homepage of your repository and view the `setup.sh` to verify the new code was pushed to your repository.
-1. Close the codespace web browser tab.
-1. Click the **Create codespace on main** button.
-
-   > Wait about **2 minutes** for the codespace to spin itself up.
-
-1. Verify your codespace is running, as you did previously.
-1. Verify the `setup.sh` file is present in your VS Code editor.
-1. From the VS Code terminal, type or paste:
-
-   ```shell
-   /usr/games/sl
-   ```
-
-1. Enjoy the show!
-1. Wait about 20 seconds then refresh this page (the one you're following instructions from). [GitHub Actions](https://docs.github.com/en/actions) will automatically update to the next step.
+- Learn more about securing your supply chain by reading: [GitHub Codespaces overview](https://docs.github.com/en/codespaces/overview).
+- [We'd love to hear what you thought of this course](https://github.com/orgs/skills/discussions/categories/code-with-codespaces).
+- [Learn another GitHub skill](https://github.com/skills).
+- [Read the Get started with GitHub docs](https://docs.github.com/en/get-started).
+- To find projects to contribute to, check out [GitHub Explore](https://github.com/explore).
 
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