Board Thread:New on K-ON! Wiki/@comment-31861979-20170905002921/@comment-25308539-20170907053231

This page is a good summary of the kinds of things that are still being worked on. However, a lot of these projects relate to content near the end of the series, so it might be difficult for you to contribute straight away, since you're new to k-on.

I think the best way to help out would be to watch and enjoy the show, and after each episode, check the wiki's article on it to make sure it's as correct as it can be!