I completely translated the bio section into my own study guide. I had read through it once, than decided to go through it all again and write down the important facts.
This takes a lot of time...but writing and rereading everything has pretty much cemented the entire section in my brain. I put additional genetics, plant bio, and embryology info in my notes from other texts because I don't feel kaplan did a good enough job covering them. Now I can quickly run through my light weight bio notes..rather than lug that kaplan book around.
As for ochem, I just divided some paper into functional group (alcohol, ester, ect) sections, and wrote down every reaction they can go through.
Gen chem I think is better just to do a bunch of practice problems because the conceptual stuff shouldn't require massive note taking (in my opinion).
The only extra QR section I needed was a simple unit circle for trig. I can visualize sin/cos/tan functions so much better by studying the circle rather than reading words.
I know some people who scored well by barely skimming kaplan or not reading it at all...it depends on how well you retain info from undergrad classes.