diff --git a/.gitignore b/.gitignore
index eb99377..72818e9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -133,4 +133,5 @@ _build/
 _contents/
 
 # Jupyterlite
-_output/
\ No newline at end of file
+_output/
+book/.jupyterlite.doit.db
diff --git a/book/.jupyterlite.doit.db b/book/.jupyterlite.doit.db
deleted file mode 100644
index c022fbd..0000000
Binary files a/book/.jupyterlite.doit.db and /dev/null differ
diff --git a/book/workflows/github.md b/book/workflows/github.md
index 196a6e6..60a0e50 100644
--- a/book/workflows/github.md
+++ b/book/workflows/github.md
@@ -29,6 +29,17 @@ Wait a few minutes for the website to be deployed, if you're curious, have a loo
 
 ![alt text](../images/image-8.png)
 
-When the workflow has finished, visit your build book at https://<username>.github.io/<repository_name> (case sensitive). For our example it is: https://dummystudent-Tom.github.io/My_own_book:
+When the workflow has finished, visit your build book at `https://<username>.github.io/<repository_name>` (case sensitive). For our example it is: https://dummystudent-Tom.github.io/My_own_book:
+
+![alt text](../images/image-9.png)
+
+---
+
+It is possible to have multiple versions of a book published at once, by creating another Git branch (e.g. `draft` or `dev`).
+For each branch, the respective book is published at `https://<username>.github.io/<bookname>/<branchname>`.
+Technical note: for convenience, just `.../<bookname>/` redirects to `.../<bookname>/book/`, which is itself an alias (a symlink) for 
+`.../<bookname>/main/`.
+
+To learn more about how we do this, please see the [GitHub Actions documentation](https://docs.github.com/en/actions) and our deployment pipeline configuration file `.github/workflows/deploy-book-ghpages.yml` [here](https://github.com/TeachBooks/template/blob/main/.github/workflows/deploy-book-ghpages.yml).
+
 
-![alt text](../images/image-9.png)
\ No newline at end of file