@peteratmsr
Welcome to the light side. Things are different here, without AI and automated feed curation, it is very much what you make of it. I would suggest following and unfollowing profusely to find those things which interest you.

You can also follow hashtags, and on the desktop give them their own column. You might wish to edit your introduction post and hashtag the keywords: Mastodon search only works on tags as free word search would overload instance server db's. Now there's an interesting research project for you!

Best wishes finding your feet.