If you're wanting to learn from an OSS community, find their Discord and just listen into calls that happen.
Discussion
Fedimint is really good for this. Links on the GitHub:
https://github.com/fedimint/fedimint
Somewhat inconveniently, RGB only does calls on Jitsi but the Telegram is active. DIBA has a Discord, but we never really use it. I prefer when we do Twitter Spaces, but we don't really do external-facing dev calls.
I was listening in to Fedimint when I noted this. 😅