There is also a forum and Q&A board on GitHub discussions. Welcome!
We have an announcement and discussion mailing list for users and developers: firstname.lastname@example.org. It is the recommended place for extensive discussions and troubleshooting.
There is also an RSS feed for the list.
You need to join to be able to post.
Please use bottom-posting on the mailing list.
We also have matrix rooms for more interactive discussion:
#roc-streaming:matrix.org- user chat (web link)
#roc-streaming-dev:matrix.org- developer chat (web link)
You can open the chat right in your browser using web links above, or you can install Element (a popular matrix client) to desktop or mobile device. Except Element, there are plenty of other matrix clients.
You need to setup Matrix account to be able to join the room.