1.) Take a practice test and see what your "score" is.
2.) If it's not up to where you want it to be, consider taking a prep class. I did and improved my score 600 pts!!!
3.) Take lots of full length practice tests.
4.) FINISH THE TEST when you do take it. If you don't every one you leave blank they will assume you got wrong AND add in a penalty.
5.) On the math section, if you see "which of the following" start looking at answers 4 & 5 first. Most likely the answer will be one of these.
6.) On the logic games, learn to set the game up properly. That is the MOST important part to getting the correct answer!!
7.) Practice, practice, practice!!!
Hope this helps. Let me know if you need any other pointers....