There are a lot of great A&P threads if you do a search here. It's hard to say what to study first because I think every class is structured differently. In my class we did basics/body positions, tissues, integumentary system, nervous system, skeletal system, and muscle system in that order. Before it started I read the first two chapters in my textbook. I'd suggest doing body positions and tissues if you want to get a jump. We also did some basic chemistry concepts so if you haven't taken that course yet, reading that chapter could be a help as well.
I did a little bit of coloring in the anatomy coloring book mentioned above, but I figured out that it was more helpful as a supplement to things I had already read or learned about in class. It's hard to understand much just by coloring it with no previous knowledge of the subject.
Someone here pointed me to this site:
Web Anatomy: Self Tests
The quizzes there are SUPER helpful, but again, it will supplement what you learn in lab and lecture. For cell division, I watched the "mitosis rap" on youtube (very cheesy, but I will never forget the stages of mitosis...ever, thanks to that goofy song)
In the beginning I used Quizlet (a free iPhone app) to make flash cards on my phone and studied them for 20 minutes before bed. I didn't have the time to make my own cards as the class progressed, but you can search other people's sets and study from them. I just saved the sets and deleted any cards that I didn't think I was responsible for knowing.
As general advice: read every chapter before you're lectured on it if you can. Set aside one hour a day with no distractions and go over new material and old material. The information isn't difficult to understand, but the volume of it can be really overwhelming. If you know your learning style, taylor your studying to it. I'm a visual/kinesthetic learner so I drew a lot of pictures, took pictures of the professor's notes on the board, and did everything I could to get into the lab on days I had class to look at the models. A girl in my class was more auditory so she recorded the lectures and downloaded mp3s of the chapter reviews. If you find some people in your class that you get along with, form a study group. If you can't get a group together, talk out all the physiological processes to anyone who will listen (your family, your significant other, your dog) Good luck!