Thank you for this! But unfortunately I'm very stupid, and I have more questions!
I joined Fedia as my server (instance?), so I should be able to use this account in other servers too, right? And I should be able to see other communities from Fedia? How do I start to like... aggregate all the communities I want to follow in one place? I also get the message that posts may be missing when I look at communities through Fedia, so I'm worried I'm doing it all wrong ;-;