I had this same problem several months ago and so I've decided to start creating my own tutorial series on 2d games. I have a few ideas for how I'd like to do it, but would be interested in anyone's reactions to these ideas:
1. Put all tutorial videos up on YouTube for free
2. Tutorial assets, challenge build solutions and a learning community that would accompany the YouTube videos would be available for a one time fee of $30
OR
Just put the thing up on Udemy for $30. Udemy's learning community features aren't the greatest, but I like their mobile apps and site.
I think when this tutorial is all said and done, there will be around 4-6 hrs worth of videos.
Thoughts?