How to Brew: Everything You Need To Know To Brew Beer Right The First Time An absolutely required reading by all brewers. If you only own one brewing book, this is the one to have.
Brewing Classic Styles: 80 Winning Recipes Anyone Can Brew An excellent recipe book to brewering every style of beer imaginable. Great explanations of what makes a style of beer what it is.
Brewing Better Beer: Master Lessons for Advanced Homebrewers For advanced all-grain brewers looking to take it up a notch. The BJCP Grand Master V judge gives his approach to homebrewing. Great read.