Karsten Wade is leading our POSSE group in a "let's learn how to be a contributor to Fedora Documentation!" exercise - in this case, writing release notes. I made a screencast at the request of some of the other participants (originally screenshots until I realized it was Just Easier to use Istanbul).
It's worth pointing out that we didn't originally have Documentation on our "Stuff To Learn" schedule at all; this was a spontaneous happy moment, with Karsten around and offering to teach, and folks in the room deciding they wanted to learn, and me deciding to make a screencast. The unplanned-ness is probably a huge part of what made it such a good learning experience - I'm not sure how this would work as a Standard Part Of Someone's Classroom Syllabus. But... you know, I could be wrong. Teachers, what do you think?