I had to take it before I started my EMT program. I studied A LOT and wound up getting an A in the class.
First things first, read all of the material like you're supposed to...it's the only way to get it all in. If you don't understand something you just read, go back and read it again to see if it gives you a better understanding. If not, ask your instructor about it.
I also used flashcards to help me through it. I had the word on one side and the definition on the other side. On slow nights at work I would have a co-worker either read me the definition or read me the word and I would give her the word or definition that matched it.
When memorizing the bones or muscles in the skeleton (or the different parts of each organ or whatever) I would make up sentences to help me remember. I can't even remember what it was for now, but I remember I had one sentence that was like "
Make
It
Practice
To
Wear your
Vest
Everyday
Because
Vests
Save
Lives!" Sounds stupid, but it worked when I saw the diagram and could write down the first letter of each bone (or muscle, whatever it was) and get started...it helped jog my memory.
Good luck!!!