I want to second simpleliving.net I am over there ALMOST as much as I am at MDC.
Some other books that are good are
Financial Peace Revisited by Dave Ramsey
Debt proof Living (I think that is the title) by Mary Hunt
The Automatic Millionaire by David Bach
It really depends on your current situation. Do you have debt? current income? etc..
Any budget program will work if you stick with it. I really liked the way The Automatic Millionaire showed the importance of "Pay yourself First". That is basically what the whole book is.
Just grab a bunch from the library and find one that "speaks" to you.