As other have indicated, anything in your book is free game... but for the most part if Airway is an option, consider it heavily... same with scene safety.
This is an understatement, but you have to know your stuff. Just look at each question and think of what you learned. Study. Study like a SOB.... expose yourself to as many practice questions as possible so you can get used to the question format as they like to "trick" you, but you will only be fooled if your a) do not read the question completly or b) did not study.
As far as the test goes, it is an adaptive learning test... it will start with a few softballs, as you get them correct the test will get harder until you start to miss a few, then the questions will back down and find your median and compare that to the NREMT standard.
I freaked out when I took my basic... I left that place with the intent to murder my instructor because I studied my butt off, and it seemed like half of the questions on the test we not even material I had ever heard of!! It shut off at 70 and I was upset because it was asking about cardiac meds, ECG interpretations... I fealt robbed.
But, it turned out the test kept getting harder and harder until it was satisfied that I would not kill anyone, and if I did I could not blame it on the curriculum
I would say relax, but if you are like me you will not be able to relax until you see your scores.
Good luck and be sure to post your results good or bad, because if you fail you are going to need to study and do something different so this place will become your best friend.