I just made a Piefed.social account today. I’m very familiar with reddit, but after the API changes and all the bullshit that’s been happening with the site lately I want something different. How do I see which communities I’m a part of, the equivalent of subreddits I guess? Where do I go to find new ones? Do I need to be in a singe instance to participate? I’d really like to find the Lemmy equivalent of my favorite subreddits from reddit, but I simply don’t know how to do that.
You can follow Lemmy communities on Mastodon but that will cause every single comment to appear in your feed, so depending on how much activity they get, they will probably flood your feed. You can post to Lemmy communities from Mastodon by mentioning them, to the best of my knowledge. In either case you can reply to whatever you see on Mastodon and it will appear as a Lemmy comment.
You cannot follow Mastodon accounts on Lemmy.