I'm a skimmer, but when I get to something that's unfamiliar or I don't understand, I stop and read it all.
One way to do that is to read the first sentence of every paragraph; IF the book is well written, that first sentence should tell you what's in the paragraph and then you will know if you need to read it or not. On long paragraphs, you should also look at the LAST sentence because ideally that should summarize or even set up the next paragraph.
I'm also a speedreader (which I somehow learned on my own) and if you can master that it will really help you with the amount of reading you have. Kris, I have heard that EyeQ really works. Good luck with it!
In nursing school
, I made As one semester, Bs the rest, primarily because I was working full time and single mom of two tween kids (I had to make every second of my study time count -- there really wasn't much of it). I also couldn't afford many of the books which meant I had to read what I couldn't buy in the lab at school. And, since I'd worked in psych for 6 years at that time, I didn't read ANY of the psych book. My overall GPA though, is 3.6 (lots and lots of college credits) -- I do know lots about how to study, how to test, and how to write for a class.
Having said all that, I also have to say that YOU know best what study methods will work for you. You probably already know whether or not you need to read it all or skim it...whether you need to make flashcards...whether you need to review your notes...whether you need to read your notes aloud and listen to them at every opportunity...everyone learns a little differently. And just because someone else does or doesn't do something doesn't mean it will work for you.