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book/exercises/005a.md

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-# Exercise 6: Use pages from someone else's book
+# Exercise 6: Reuse content from another book
 
-So far, you've been working inside your own book. But what if someone else has already written a page that you'd like to reuse or refer to in your own book? Instead of copying the content manually, you can **link to their page directly** using [TeachBooks’ external content feature](https://teachbooks.io/manual/features/external_toc.html). This way, if the original page is updated, your book will reflect those changes automatically!
+So far, you've been working inside your own book. But what if someone else has already written a page you’d like to reuse? Instead of copying it, you can **include it directly** into your own book using the [TeachBooks Recombiner](https://teachbooks.io/recombiner/).
 
-::::::{topic} Exercise objective
-Can you include a page from someone else’s book into your own using the `external` keyword?
-::::::
 
-1. Choose a book you want to reuse content from. For this exercise, you can use this one as an example: `https://github.com/TeachBooks/manual`. Browse its content to find a specific page (e.g. `intro.md`).
+
-2. In your own book repository, open the `_toc.yml` file. This controls which pages are shown in your book and in what order.
+\::::::{topic} Exercise objective
-3. To use the functionality, use the `external:` keyword in the `_toc.yml` file to include a file directly from the GitHub repository as follows:
+Can you include a page from someone else’s book into your own using the Recombiner?
+\::::::
+
+
+1. Open the [TeachBooks Recombiner](https://teachbooks.io/recombiner/).
+2. Select the book and chapter(s) you want to reuse:
+
+   * Click on the book (e.g., **TeachBooks Manual**).
+   * Browse the chapters and click the `+` button to select the ones you want (e.g., **Collaboration in GitHub**).
+3. Click **Show how do it yourself instructions**
+4. Follow the instructions provided:
+
+   * Copy the external link (it will look something like this):
 
      ```yaml
-format: jb-book
+     - external: https://github.com/TeachBooks/manual/blob/v1.1.1/book/workflows/collaboration.md
-root: .
-
-parts:
-  - caption: ...
-    chapters:
-    - file: ...
-    .
-    .
-    .
-    - external: <link to GitHub / GitLab source .md or .ipynb file>
-    .
-    .
-    .
      ```
+   * Paste it into the `parts:` or `chapters:` section of your `_toc.yml` file in your book repository.
+   * Save the changes, commit, and push them.
 
-4. Try out different kind of links. You can point to:
+\::::::{admonition} Example: `_toc.yml` snippet
-* A file on a branch (this pulls the most recent version on that branch): `external: https://github.com/TeachBooks/manual/blob/release/book/intro.md`
-* A file at a specific commit (this takes the file during the state of a specific commit (06d67e8)): `external: https://github.com/TeachBooks/manual/blob/06d67e8a0110c94d9147ce07090656dedc7d0e64/README.md`
-* A file from a tag (this locks the file to the version associated with a specific tag (v1.1.1)): `external: https://github.com/TeachBooks/manual/blob/v1.1.1/README.md`
 
-
-5. Commit your changes and push them to your GitHub repository.
-6. Open the book online (e.g. via GitHub Pages or the link in your repository's `Actions` > latest deploy) and check whether the external page appears correctly.
-7. If the external page doesn't load or gives an error, double-check:
-
-   * The link is a raw `.md` file on GitHub (not the preview or rendered page).
-   * You’ve committed and pushed the `_toc.yml` change.
-
-
-````{admonition} Example: TOC snippet 
 ```yaml
 format: jb-book
 root: intro
 
 chapters:
   - file: 001
-  - file: 002
+  - external: https://github.com/TeachBooks/manual/blob/v1.1.1/book/workflows/collaboration.md
-  - external:
-      url: https://github.com/teachbooks-demos/book-collaboration/blob/main/004.md
-      title: Collaboration in GitHub
   - file: 003
 ```
-````
 
-```{tip}
+\::::::
-You can use external pages from public GitHub repositories that are formatted as valid Markdown. Just remember: the content is *read-only*—you can’t directly edit the external page from your book!
+
-```
+5. When you are ready, commit your changes to the repository by clicking on the green `Commit changes` button.
+
+6. Add a commit message.
+
+7. To see your changes, go to {octicon}`play` `Actions` - The most recent workflow run `overview.md / the commit message of the commit you just made` - Wait for it to finish - In the summary, click on the link of your book shown in the table `Branches deployed` and under `Primary book at root` (getting bored of waiting? There'll be exercising on doing this locally which prevents you from waiting).
+
+8. Do you see your change? If you don't see it click `CTRL`+`F5`/`Control`+`F5`to refresh the page.
+
+
+
+\::::::{admonition} Check your understanding
+\:class: note
+
+Before moving on, make sure you understand:
+
+* What is the benefit of linking to an external page instead of copying it?
+* How does using the Recombiner simplify adding external content?
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-```{admonition} Check your understanding
-:class: note
 
-Before moving on, make sure you understand the following:
-- What is the difference between linking to an external page vs copying it into your own book?
-- How do you use the `external:` keyword in `_toc.yml`?
-- Why might it be useful to include a page from another book instead of rewriting it yourself?
-- How can you make sure an external page link works properly?
-```