You might consider browsing the math section of wikibooks. There is a good introductory geometry and intermediate algebra. The Math Forum content referred by nik is good & more comprehensive, but it's organized more like a collection of resources.
As far as bound books go, An oldie but a goodie is Mathematics for the Million, by Lance Hogben - it's been around for years, but covers a ton of basic material in an easy to read style. A third grader and a college student could both get useful information out of it, it's that comprehesive. And the price is very reasonable. No calculus!
One of the best elementary algebra book out there is Elementary Algebra, by Harold Jacobs. Expect to pay for this one. If you like this, he also has a intro to geometry textbook.