Lists of people by topic: https://fedi.directory/ https://fediverse.info/explore/people

Mass-follow people by topic: https://communitywiki.org/trunk Or just follow a bunch of tags

And, once you have a few people that you follow, you can use this to find more based on whom they follow: https://followgraph.vercel.app/

Is mastodon worth signing up for, as a content creator?

I used to be a pretty avid tweeter - I’d post random things related to my job (software engineer), like gotchas I encountered, new articles I’d written etc etc, but I left Twitter when a certain somebody took over.

I’m not bothered about a large following, but I did enjoy randomly helping people that would see my tweets and fix their issue / help with the thing they were working on.