Got a whole bunch of new followers after Bloody Thursday. So, hi! Welcome to the Fediverse. It's like Twitter, but different, most notably that moderation decisions are conducted by moderators of your instance, rather than by one central company.
There's a lot of good writing on this place as still a very white space, so instead of saying anything about that, gonna point you to follow the writings of @shengokai @hypervisible and @Kishonna
https://techpolicy.press/the-whiteness-of-mastodon/
https://www.wired.com/story/black-twitter-social-media/