I'm going to an Algebra I Competition...????!!!!!!?

Okay, I took Algebra last semester and passed with a 95. I took the advanced because regular Algebra is a full year. Anyway, my teacher offered me to go to a competition for the course, I agreed! He said it counted more against you if you answered a question and got it wrong rather than just skipping the question. So he handed me an example packet on the test they took last year, and I have not ever seen some of the material ever in my life. I am so nervous. I don't want to overwhelm myself by trying to absorb all the material tonight like I know some people will (the competition is tomorrow!!! =O) So what is some advice you guys can give me? How to improve my understandings in one night? How to calm down, etc. Thanks in advance!