Duane Shinn's Keyboard Workshop

If you want a huge selection of piano playing courses, then go to Duane Shinn's Keyboard Workshop.   I cannot do justice to his array of products in just a few sentences, but know that I think that he has put together an impressive collection of learning resources in a myriad of styles and techniques.

Duane puts out a good product filled with a lot of information.  You should at least sign up for the free things on his site; they give you a great taste of what is available.