Here's a list of links that I found useful when learning about ActivityPub and forge federation:

General

• https://matrix.to/#/#general-forgefed:matrix.batsense.net

• https://discuss.coding.social/t/world-of-opportunity-expanding-from-forgefed-to-fsdl/39

• https://discuss.coding.social/t/challenge-fixing-the-fediverse-technology-adoption-lifecycle/38

• https://pad.public.cat/8yNgnlxmSsGYk3TfIau46A?view#

• https://forum.forgefriends.org/t/forge-federation-webinar-january-19th-2022-10am-noon-utc-1/538

  ActivityPub

• https://activitypub.rocks/

• https://www.w3.org/TR/activitypub/

• https://socialhub.activitypub.rocks/pub/guide-for-new-activitypub-implementers

• https://go-fed.org/activitypub-glance

• https://blog.joinmastodon.org/2018/06/how-to-implement-a-basic-activitypub-server/

• https://blog.joinmastodon.org/2018/07/how-to-make-friends-and-verify-requests/

• https://docs.joinmastodon.org/spec/activitypub/

  ForgeFed

• https://forgefed.peers.community/

• https://notabug.org/peers/forgefed

• https://dev.angeley.es/s/fr33domlover/r/vervis/s

• https://github.com/go-gitea/gitea/issues/14186

  Gitea

• https://matrix.to/#/#gitea:matrix.org

• https://matrix.to/#/#gitea-dev:matrix.org

• https://discourse.gitea.io/

• https://nlnet.nl/project/Gitea/

• https://github.com/go-gitea/gitea/issues?q=label%3Atheme%2Ffederation

• https://github.com/go-gitea/gitea/issues/18240

• https://discourse.gitea.io/t/milestones-for-federation-grant/4895

• https://discourse.gitea.io/search?q=code%20walkthrough%20in%3Atitle%20%40dachary%20order%3Alatest

• https://discourse.gitea.io/t/forgefed-federation-in-gitea/1157

• https://gitea.com/Ta180m/gitea

• https://gitea.com/Ta180m/gitea/wiki

• https://github.com/Ta180m/gitea/issues/3

  Go-Fed

• https://go-fed.org/

• https://github.com/go-fed/activity

• https://go-fed.org/activitypub-tutorial

• https://go-fed.org/ref/activity/streams

• https://github.com/go-fed/apcore

• https://github.com/owncast/owncast/pull/1629

• https://gitea.com/gitea/go-fed-activity

• https://gitea.com/gitea/go-fed-activity/issues/1

  ForgeFriends

• https://forgefriends.org/

• https://forum.forgefriends.org/

• https://lab.forgefriends.org/forgefriends/forgefriends

• https://lab.forgefriends.org/forgefriends/community-action

• https://forgeflux.org/