If your relatively new to mathematica i would definitely pick up a copy of Mathematica programming by Paul Wellin. This will give you an excellent starting point and solid foundation before you progress to more advanced material. I am still working my way thru Pauls book but its been well worth it, its really opened my eyes to the power of mathematica.

If you are relatively new to Mathematica, I would definitely pick up a copy of "Programming with Mathematica: An Introduction" by Paul Wellin. This will give you an excellent starting point and solid foundation before you progress to more advanced material. I am still working my way through Paul's book, but it has been well worth it and has really opened my eyes to the power of Mathematica.