I know you good people here don't need that, but wanted to include some links, in any case somebody wants to share this on the other side (and doesn't have the time themselves):

What is Fediverse? (Join The Fediverse)

Diving into the fediverse (Good Video + Q&A's)

A Hitchhiker's Guide to the Fediverse (Fediverse: Alternatives to)

Find software for whatever you are into (Explore App Category's)