The onboarding will offer you a lot of topics to sign up to. These contain communities in them. The idea is to populate subscription feeds, however it can leave some users with a lot of undesired subscriptions if they click too many.
If you wish to roll this back. Go to Settings -> Profile and click the yellow bar. Don’t click the red bar!
But welcome, and feel free to post your thoughts here.
!newcomers@piefed.zip for a specific community also devoted to new users to the Fediverse.
Come Join us in the Zulip Chat if you have specific queries.
Unfortunately it’s where people post things, and I’ve already cut out Facebook, Threads, Xhitter, Insta, whatever, so if I need to find information about something happening, that’s pretty much the only place left for me to look (nowadays when there’s only like 7 websites in the entire world).
Whether I go once per month or per day during high activity timeframes, it’s where some content is. And sometimes not even then: irl, the entirety of Reddit is considered a niche habitat for nerds. So if you want to know a specific thing - like a schedule for a local park, you pretty much have to use whatever they chose to post their content to, or else go without.
Rather go without than consume corporate fascist (but I repeat myself) crap.