I really love the idea of sponsored courses/tutorials. This type of thing makes me more likely to use Git and GitHub more, and evangelize more.
I have a tough time wanting to pay for a course at a place like code school when I know if I go through the docs/tutorials I'll get it. It's not that I don't think the experience is better, or even (for a certain definition) worth the money. I feel like it is an unnecessary indulgence.