Chemistry, 2nd Edition. The Great Courses DVD/video lecture, plus course guidebook.  $75. Taught by Prof. Frank Cardulla, who has won the National Catalyst Award for Outstanding Chemistry Teaching. Courses include basic concepts of quantitative reasoning, metric system, elements, atoms, periodic table, isotopes, the mole, solving empirical formula problems, writing and balancing chemical equations, molarity problems, acids and bases, titration curves, and much more.