Omeka’s documentation is actually very good, but experience has taught me that students really appreciate handouts. So here’s a digital version of my handout for a beginning Omeka workshop.
I know a lot of people teach these workshops, so feel free to use or modify this material (PDF version, Word version) if it’s useful for you. And here’s a handout that offers a quick Omeka vocabulary lesson and some guidance on whether Omeka’s the right tool for your project.
I also have a post and handout on the next step with Omeka, creating an exhibit.
As an aside, I make these tutorials with Blue Mango’s ScreenSteps software, which I highly recommend.
[Edit: Thanks to Jon Ippolito, who tipped me off to this interactive screencast about building an Omeka exhibition.]