Camping tips and tricks

I am taking a course in First Aid by the American Red Cross and I need to pass the test on First Aid with a 80%. My teacher said it is 15 questions and I am worried because there is a lot of information. I read the manual but I am not sure if I will remember all of it after all I can only get 4 wrong. Does any one have any tips that has already taken it? What should I focus on? Should I memorize numbers?

Correction: You can only get 3 wrong.

15 * 0.8 = 12