Ricci Adams’ Musictheory.net.

Ricci Adams’ Musictheory.net is by far the best resource I’ve ever found on the Internet for learning basic music theory. Flash animation is used to guide students through clear, detailed, progressive lessons.

It is simply a must for the beginning musician, and would be a valuable aid to students already studying first year theory.

I feel I should say more, but there’s nothing else to say. This site is fabulous!