Sorry for the slow reply here. In short, I would LOVE to invite you and others to produce courses for the site.
The purpose of the courses is to help new folks see that they can do some really cool stuff and the supports are there so ideas like "field research" and "situated documentary" become really practical.
I think we are starting to get a handle on the overall style of them that can serve as a template for how to make your own. Getting good lighting, a quiet background, etc. is all possible with a $100 webcam and a minimally setup room.
Do you have some topics in mind?
The plan right now is to get an ARISjs course up shortly (Phil recorded it) and one about facilitating Community Investigations (Jim Mathews). I'm also scheduled to rerecord the ARIS 101 using a better camera.