We don't take an entrance exam. Ours solely based on GPA. I have a 3.5, a friend of mine who also got in had a 2.75. Requirement is 2.5. I was just accepted a couple of weeks ago and have no idea what rank I was out of 61 other people.
Have you tried searching quizlet? Its and amazing study tool! There are tons of sets with pictures to study and test yourself. Also so you can purchase ap revealed. the two of these combined helped me so much in lab with AP 1 & 2.
I personally would not do that. My school may be different from yours but isn't AP I a prereq to AP II? Anyway, I have taken both in normal semesters and they were both very fast paced because there is just so much information. I loved both classes though.