Schaum's Outline of General, Organic and Biological Chemistry

Recall that ordinary salt is a compound of sodium and chlorine. List several systems that can be defined in a shaker full of salt.

I have found the Schaum's Review series very helpful both in review and in independent study, especially for Organic Chemistry. Many times, chemistry students fail to learn key concepts not because they are incomprehensible (thankfully) but rather because they were either explained badly or simply explained in a way that does not make sense to a student. This book explains all the key concepts and includes almost 2000 problems to make sure you understand O. Chem. clearly even if you're so sick of it you're comtemplating shoving an Erlenmyer full of benzene down your professor's Organic throat. Buy it, and save your sanity.