I've added a couple new headers to my Increasingly Less-Brief Guide to Mastodon in the last few days, to address some questions I've seen from new users:
* Why should I add a caption to my picture?
* Why can't I search for a specific word or phrase?
* Why can't I quote someone's toot, like a quote-tweet?
* Weird, my server doesn't have a bunch of these features.
I've also changed the list of phone apps I recommend after some useful feedback.