shellsharks, I wrote this “guide” / thoughts on #Mastodon after re-joining the Fediverse in November 2022 (soon after some sort of Twitter-related crisis). This coincided with one of the larger migrations of #infosec folks to Mastodon.
https://shellsharks.com/mastodon
I have kept this post semi-updated with a lot of interesting Mastodon/Fediverse-related resources as well as information for the infosec community here.