If you're interested in contributing to #Gitea #federation, I updated an old comment I wrote: https://github.com/go-gitea/gitea/issues/18240#issuecomment-1071103414
The two most important links are:
- https://gitea.com/Ta180m/gitea/wiki/Useful-links for learning ActivityPub and ForgeFed
- The big task list tracker: https://gitea.com/Ta180m/gitea/issues/3