AP Chemistry NMSI - A great site with lecture notes, practice problems, and most importantly VIDEOS explaining various topics covered in AP Chemistry.
http://apchemistrynmsi.wikispaces.com/AP+Chemistry+Class+Lecture+Notes+AND+instructional+videos
ChemReview - This site contains learning modules (chapters) for every Chemistry topic. The modules are downloadable and printable and are a self-guided reading with questions and answers and practice sections (also with answers) to cover anything you need to know for AP Chemistry.
http://www.chemreview.net/
http://apchemistrynmsi.wikispaces.com/AP+Chemistry+Class+Lecture+Notes+AND+instructional+videos
ChemReview - This site contains learning modules (chapters) for every Chemistry topic. The modules are downloadable and printable and are a self-guided reading with questions and answers and practice sections (also with answers) to cover anything you need to know for AP Chemistry.
http://www.chemreview.net/