Okay, so I never used Twitter but figured I'd give Mastodon a try.
But what do you even do there? Is it just a place where you wait for specific people to shout into the void? And then what?
Also how do I even find interesting subjects or people to follow?
Sometimes it's useful following specific projects or organizations you're interested in to be notified when anything interesting is going on. In a way similar to an RSS feed I suppose
Whats an RSS feed?
Essentially a web feed to have a single timeline from multiple sources. Think of it as Google News but you manually choose the sources and it's chronological.