Mastodon & Fediverse for Beginners
Here's a good introduction to the Fediverse from Paula, with details about Mastodon and Pixelfed.
Imagine Twitter, Facebook, Instagram & Co were all part of one giant network. That's basically what the fediverse is, except the parts are less well known, free & decentralized alternatives to those.
E.g. Mastodon is like Twitter, Friendica is like Facebook, Pixelfed is like Instagram and there are many more.
If you e.g. have a Mastodon account you can follow accounts on Friendica or Pixelfed and you might not even notice, that they are not Mastodon accounts.
You can find me in these too: