You're asking the wrong question.

The right question is: How can I make a site that's more compelling than lynda.com or stackexchange?

I also think part of your problem is that you want to keep the information and videos for free. Yes a real infobusiness will give away some stuff for free, but it can and should also sell content if that content has any value.

Hint: If your content solves a problem, it has value.

Other thoughts:

- Not every hobby should be a business

- Another model can be to use free information to build a consulting business