Personally I think that is really good idea especially for the Gen Nav elements. However, my own opinion is that you shouldn't read any commercial material yet for two reasons:
1) They may contradict the JAA sillybus in some way and only confuse matters.
2) You have to read the notes regardless simply because of the progress tests if nothing else. But if you are too familiar you will get bored and it will be a chore.
Just my 200 Mongolian Togrogs worth,
HWD.