i am taking it too next year! I took AP European History last year and I can tell you ONE thing that made me get an A in the class. Reading the textbook like you are reading a story book and SPARKNOTES, it really helps keep you organized and read sparknotes along with your text book if you don't fully understand one topic in your textbook. AP US will be sorta easy because it is only 1 country. Not having to study each and every country in Europe and it's developments like in AP Euro. And be dilligent. I still have to do my summer assignment.
