Bru'n water is probably one of the best out there.. That is what I use. It is online for download.
Also, check out the "Basic Water Primer" sticky in the Brewing Science forum - good intro, and then more information than you could ever want after. Also, chapter 15 of Palmer's book, how to brew....
I assume you are doing all-grain? Correct?
Kegged/Serving: Dortmunder, Bo-Pils, Nugget Nectar Clone, Citra IPA, One Hearted Ale, Heady Topper Junior, Scottish 70, British Dark Mild
Bottled: Barley Wine, Sour Belgian Golden on Cherries
Primary: Ordinary Bitter, Bourbon Barrel Imperial Porter
Secondary: Bo-Pils, Sour Cherry Stout,
Future Brews: German Pilsner, Dortmunder, Porter, APA, IPA, British Dark Mild, More...... More....... Beer.......