If you want to get really into it, I'd suggest a book called, 'The Physics of Skiing, Skiing at the Triple Point.' It's by David Lind and Scott P. Sanders. It's a textbook for a physics elective that they used to teach at CU-Boulder. It's good if you have some physics background to read it, but you can understand it with very little knowledge.
They talk about how a ski slides on snow, how a ski actually works, and then they go into the mechanics of traversing and turning. It's an intersting read if you like physics anyways.