I've seen a few folks ask how they can find people to follow. And there's a great answer: Trunk (https://communitywiki.org/trunk)
#trunk is a community-run set of lists of people interested in various subjects, and a great way to find users who share your exact area of interest
@codesectionsThat's what i'm talking about!
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.