SAT Questions

Hi and welcome to my blog,

I opened this blog to help anyone who is preparing for his SAT.
I remember myself when I started - I was so lost and in such a panic.
Luckily I got this great SAT guide that helped me a lot . So study hard and good luck!

I am planning on taking SAT Subject Tests in US History and Biology in October. As I was studying my prep books, I was wondering if I also used AP prep books for those classes, would they help? I really want to get a high scores on these tests. Are the AP prep books more in depths? I have never taken an AP exam before so I don’t know how thorough AP prep books are. Or should I just stick to studying only SAT Subject Test prep books?

My questions is not just using AP prep books but using both SAT II preps and AP preps.