   Tensor Analysis
  hi, i know this doesnt have anything to do with programming but i was wondering if anyone could point me in the direction of a very good site that explains tensor analysis well. i have been trying to learn it for some time but the only book i could find was a study guide and not of much use . while i am only 15 i really enjoy learning this kind of stuff and hope that someone here can help 
  as in inertia tensor? those are the only tensors i know about, but then again i dont even know the exact definition of a tensor... ;Tensor Calculus and Continuum Mechanics, a free online textbook.