New users here, so I'll start regularly posting bits of Mastodon etiquette!
One thing that might be new is having to think about what privacy setting to use for your posts
For a lot of posts, you probably want Unlisted—not Public!
Unlisted posts go to your followers and they're boostable; off-topic posts are allowed and encouraged
Public posts go on the Local Timeline; and for scholar.social, Public posts should be "on topic" (topic is: academia, teaching, learning—if in doubt, use a CW)