Improve the documentation for Forgejo

src/content/docs/Services/forgejo.mdx

@@ -2,6 +2,20 @@
 title: Forgejo
 ---
 
-## Summary
+[Forgejo](https://forgejo.org) is a free and open-source software forge. Federated Nexus provides a hosted instance at https://git.federated.nexus.
 
-[Forgejo](https://forgejo.org) is a
+## Logging in
+
+To log in, press the "Sign in" button on the top right corner and Select "Sign in with Federated Nexus" - it should take you to the Federated Nexus login page, where you can enter the credentials for your Federated Nexus account.
+
+You should then be greeted by the explore page:
+
+![The Forgejo explore page, showing a list of repositories](../../../images/forgejo/explore.png)
+
+## Viewing your dashboard
+
+To view your dashboard, press the icon in the top left corner.
+
+The dashboard shows you the recent activity of repositories you watch, a contribution graph, and a list of repositories you are a member of:
+
+![The Forgejo dashboard page, showing recent repository activity, a contribution graph, and a list of repositories](../../../images/forgejo/dashboard.png)