That guide is only one source, scan a few others on the same subject to fill in the holes.
I can recommend about 20 better sources, Shawn, where are you when we need you! Shawn's Book:
http://www.amazon.com/gp/product/081...periairplam-20
Here is a page from the old FAA Handbook discussing controls and throttle, it is simpler and more direct that the one you are slogging through:
http://avstop.com/AC/BasicHelicopterHandbook/ch4.html
Here is the entire document:
http://avstop.com/AC/BasicHelicopterHandbook/
I must say that the idea of drawing angles on airfoils as a way to truly
understand anything about helicopters is simply awful. The rotor behaves as a rotor, a big one piece thing that developes thrusts and eats power. Unless your exam has diagrams of airfoils on it and asks you to show how all the thingies are flipping all over it, I would stick to understanding how the rotor reacts.
I know I will face a zillion guys who swear by the airfoil diagram, and I wish we were all in a pub so we could slog it out with a black board. I guarantee you that except for delta3's magical computer (and its bigger brother at Sikorsky), almost nobody knows much about the angle of attack on rotor blades. Having been chief R & D test pilot, I had to sit in that simulator and explain how the real helo didn't do that, and it was always the poor way the model characterized what the blade airfoil was experiencing. I can take any helo model and pull to near stall and drive it to ridiculous results, usually in about 20 seconds.