http://www.apreviewbooks.com/ Is a good place to start. Check out these threads:
http://talk.collegeconfidential.com/history-social-sciences/1377177-best-ap-review-book-for-apush.html
http://talk.collegeconfidential.com/ap-tests-preparation/885433-ap-psychology-best-text-best-prep-books-worst-prep-books-real-tests.html
http://talk.collegeconfidential.com/mathematics-computer-science/1663659-official-ap-statistics-thread-2014-2015.html
Are you taking AP lit or Lang? In my school, you can take either one starting junior year.