I agree with Saef too. I can't imagine doing it solo.
I would find it deadly boring. It's the class atmosphere that keeps me going and actually WANTING to come back.
Maybe there are spin videos? I don't know. It seems to me you would need a good solid base on what to do before trying it on your own. It's not just sitting and "spinning". A good spin workout uses jumps, hills, intervals, sprints, runs, standing, sitting, etc.