Communities will have this little blurb in their sidebars:
You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: [email protected]
You'll take that [email protected] and paste it into the Search field here:
Then click the result to subscribe. Subscriptions have to be approved by the Admins / Mods of those communities, and some of them take a little while. Some might even reach out to make sure you're not an asshole!
Remember two things:
The communities you subscribe to and the interactions you have on them will physically exist, in part, on this lemmy.inbutts.lol server.
This is wild west internet stuff. if you go to dark places you'll find dark shit.