I know typescript but not rust. Ive been hearing a lot of chatter about Matrix - do I install and join a server to get plugged into the dev community for lemmy? Or where should I be hanging out to get an idea of what needs to be done? Github?
Github, yes ... there's a "code" link at the bottom of the page ... that'll take you to their github.
Otherwise, they are on matrix ... i've been there once and they were responsive. Probably a good place to go if you want to start contributing. I don't know where a link to it is ... maybe on the Github or the docs section for contributing?