Slowlow,
All of this is well intended, but ignore it.
Read post #7 and act on it. If you do take on any of this and then screw it up (likey as you have not been taught its application) you are one trip closer to a review. Also, if you come out with some weird and wonderful nav your instructor may well ask how / where did it come from....
Clue:
Answering " I got it off some people on Pprune" will not endear you to anyone - so do the mature thing and talk to your instructor. Its actually a plus point to identify your own weaknesses and then act to resolve them.