How/When should I study for the AP World and AP Euro Tests

I’m currently taking AP World and AP Euro. I’m in 10th grade. This is my first time taking AP Tests. What review books should I get for each subject and when do you think I should start studying? I’m taking these tests in May. Thanks.

I recommend the Princeton Review and the Crash Course book for both. If you have the class in school, I would advise you to start studying lightly around spring break, increasing intensity gradually as the tests come closer. I took AP World last year and got a 5 with those books, and am taking AP Euro this year. Best of luck to you!