First, you need to decide which schools you want to tryout for. If you have already made your college choice, this is easy. Next, you need to find out when and where your college is holding tryouts. If you don't know, you can find out by calling your college's athletic department or the sports information office. You also need to decide which squad you want to be on.
Some schools limit the squads that freshmen can tryout for.
Once you know where and when, you must find out some additional things. For example, some schools will tell you exactly what to wear, all the way down to how your hair is fixed and what color nail polish and lipstick that the girls should wear. Finally, you will want to prepare yourself for the particular tryout, so you need to know what will be involved. Each school will have different things that they want you to be prepared to do, so be ready for each of them. Just be sure to be prepared for each tryout.