newcomers has lots of resources about how to use Dreamwidth and where to find things you'll enjoy here. If you're coming from Tumblr, soc_puppet has posted tutorials for that angle. Find your Tumblr friends here.

The Follow Friday Master Post has lists of active communities by topic where you can look for some based on your interests, including some of the Most Useful Communities. Many bloggers use recurring posts to pin down their key interests and maintain activity, which is also a good source of inspiration if you aren't sure what you want to post yet.

The next big event will be marchmetamatterschallenge for archiving or writing new meta such as reviews, canon overviews, or fanifestos.