SearchinQ

http://www.purplemath.com/modules/index.htm
Cross-referenced modules which give practical tips, hints, and examples, point out common mistakes and contain little "quizlets", covering factoring quadratics, functions, graphing, and picewise functions.

http://www.algebrahelp.com/
Large collection of multimedia lessons and instructional resources devoted to algebra education, covering the basics of algebra, the basics of word problems, the basics of proportions, simplifying multiple signs, combining like terms, distribution, the foil method, exponents of numbers, variables and polynomials, study tips, perfect squares, prime factors, and buying a calculator for school.