Any specific books that helped you study?

Eeewww, I hate that kind of question.

Guyton/Hall is quite good, I used it for a pathophys course this past semester. The language is straightforward and easy to follow.

Respiratory Phys by West is great too. Renal phys by Koeppen is good too. these should all be supplements to your Guyton or Ganong, which I think are the two most popular comprehensive phys books.

I have K-types too. Up to 20% of our tests are K-type questions. Sucks.

You could try STUDYING FOR EXAMS MADE SIMPLE

Review of Clinical Anesthesia by Connelly and Silverman is a quiz book that has alot of K type questions. Physiology Pretest by Ryan and Wang is another good quiz book, and I also like Costanzo. The problem that I find I have is how to filter information. You get so much thrown at you that it can be difficult to know what to concentrate on. I found sample questions really helped me be able to put info together. As far as getting the basic knowledge I have Miller, Guyton and Barrash. Different books are helpful for different teachers. You kind of have to get to know your teacher's style of teaching and the difficultly level they get to. I have one teacher who gets extremely deep into material and will often ask questions in which the information wasn't all presented in his notes or even his sources- this is the one class where the extra quiz books have helped a ton. I have another teacher who is pretty straight forward and expects you to know his notes.
It helps if you can talk to previous students who can clue you in on each teacher and what they focus on. If I am having trouble with a specific topic I try looking it up on the web and often find some good info.
Don't worry about grades- B's get degrees, and if you can't wake your patient up they won't care that you had a 4.0. That being said I have a 91% (B) in one class right now and yes it still kind of bothers me. I am a little further along and what I can tell you is the whole time you will think I can't even remember what we talked about a week ago. Somedays the peices will begin to fall into place and other days you will be reinventing the wheel. Most people do graduate, you have already overcome the hard part of getting in.