So I’m taking AP Euro this year and I’m in the process of reviewing for the AP exam in May. Right now, I have the Barron’s and the Modern European History by Viault. However, I don’t feel like this is enough because a lot of people are saying that the Crash Course for AP Euro is very good. So, should I get the Crash Course or just stick with Barron’s + Modern European History? Also, should I change from Barron’s to PR?