@Gargron This is good. joinmastodon's "here's a huge list of websites, good luck" is an *insanely* intimidating first step to getting newbies on board, to the extent that I pointedly didn't direct people to it and instead suggested specific instances to them. Emphasizing human interests over tech-y attributes (and using less jargon-y language in the process) helps lower that barrier.
Follow friends and discover new ones. Publish anything you want: links, pictures, text, video. This server is run by the main developers of the Mastodon project. Everyone is welcome as long as you follow our code of conduct!