um don't do it like me but
i did basically 0 studying throughout the year (we used a history of the modern world, which is one of the most boring textbooks in existence. it's written quite nicely but is clearly not meant for the high school student) except spending 15 minutes on coursenotes right before the chapter tests; we ended up falling really behind and not even getting to Hitler by AP test date. all we did in class were like 1 frq per month
crammed for Euro in the last week, say I did about 2/3 hours a day. Cliffsnotes is GREAT, I've heard PR
is good too though I haven't used it. Used crash course (great for comparisons) The entire week I was sick but slept at like 12 every night cramming for Euro and APUSH (actually I facebooked a lot of that).
actual test was alright, though I felt I really screwed up the FRQ portion. came out with a 5
long story short: you can get away with a lot of sleep every night until AP week