Sounds like a good Idea, if I had the money.

For something like this I would say that the lessons should be quite advanced, maybe with "homework" between the different lessons, so that you get more out of it than just watching someone do something then and copying.

Say for example if you ran a character set up course,

Week 1 - skeleton set up, go through the options, systems in detail and demo's on the software using a set model showing considerations of joint placements etc etc and have the options for the students to either use their own model (prior approved by the instructor for topology etc) or one provided to do the same to for the next lesson, with feedback given by the instructor (maybe have a thread for it where only the people on the course can see it??)

week 2 - Creating controls, again a similar set up the the last one
etc etc

That way it gives more value for money as your making your own model with advice form a pro, as well as getting tuition along the way that can be applied for multiple applications.