Re Gordon West Study guides.
I had a book like that as one of my college text books. I did not like that style of study guide, and I still do not.. but I'm told for those not technically oriented.. That is the best (It does make a good "ofline ham test review".
Like the QRZ on-line tests but no internet needed.
Now I really liked the ARRL guide. that left me with basically one rough spot (Smith charts) and one other thing I did not understand (Power factors) we covered them in week 3, I think (may have been 2) of a six week course,, I tested out at week 4 since I had to hit the road.. Got my license a month later in the mail.. FCC took long enough. Now I can't take any more ham radio operator tests... I mean, Extra class.