Never procrastinate in the class. Sometimes, the Homework will be long (About 100 ID's sometimes) and doing at the last minute won't be helpful to you. The Crash Course Book will be beneficial for you'r review as it lists important details of the unit as review for your upcoming exams. Be prepared to write a lot, as AP Euro is mostly Essays, and SAQ's. She will be harsh at grading them, but it's the expense of you succeeding in the course, and the overall AP Exams. (As far I know, no one has scored lower than a 3 on the AP Euro in her class)