I am now using the combination of Higher education and waketrix to show my begginner friends how to do tricks.
I think H.E. goes into a little more detail on alot of tricks, but waketrix shows ALOT of footage from the side, which really helps.
Case in point, my buddy has been trying to learn surface 180's, and the side shots in waketrix gave him just what he needed to see. He learned axis x and y from Higer Ed., and finally got z from waketrix. arm position and backwards lean is hard to see from the front.