Add conceptual info about tags

Author: ethanpalm

content/desktop/contributing-and-collaborating-using-github-desktop/managing-tags.md

@@ -9,7 +9,7 @@ versions:
 
 ### About tags in {% data variables.product.prodname_desktop %}
 
-{% data variables.product.prodname_desktop %} allows you to create annotated tags. You can use a tag to mark an individual point in your repository's history, including a version number for a release. For more information about release tags, see "[About releases](/github/administering-a-repository/about-releases)."
+{% data variables.product.prodname_desktop %} allows you to create annotated tags. Tags are associated with commits, so you can use a tag to mark an individual point in your repository's history, including a version number for a release. For more information about release tags, see "[About releases](/github/administering-a-repository/about-releases)."
 
 {% data reusables.desktop.tags-push-with-commits %}
 
@@ -45,3 +45,7 @@ versions:
 
 {% data reusables.desktop.history-tab %}
 {% data reusables.desktop.delete-tag %}
+
+### Further reading
+
+- "[Git Basics - Tagging](https://git-scm.com/book/en/v2/Git-Basics-Tagging)" in the Git documentation