As always, practice makes perfect. So be sure to take practice tests in your events, which can be found at the links above, to get a feel for your events.
Other tips for tryouts:
DO NOT PROCRASTINATE UNTIL THE DAY BEFORE THE TEST!! Because you will stress yourself trying to learn and study all this.
But also do not be freaked out if you do not fully everything on the outline because you would probably be a psycho if you did know all of that.
Make a good cheat sheet! If done correctly, a cheat sheet can be a great asset.
Cheat Sheet Advice:
Learn your information, a cheat sheet does not replace actual knowledge!
Only include important things
Use diagrams/charts, make it colorful!
Organize it in a way that makes it quick and easy to find information