I am a volunteer instructor. I've been doing it since 2003.
My suggestions are:
Get the course book and read it through.
Get the game regulations and read them through.
Get a copy of the test and make up a "cheat sheet" and make sure you always cover what is on the test. By this I mean going over the meat of the test questions but not give them away. You can get bogged down in a class with questions and other things.
Keep in mind Hunter Education is about safety more than anything else.
Have a good phone number to contact a game warden or the officer over training if you get a question you don't know the answer to.
Good luck and I hope you enjoy it as much as I do.
Dave