There's a learning curve to barbecuing with smoke and grilling, and a good cookbook can really help you nail the techniques, as well as providing excellent recipes.
Several hounds are fans of Steven Raichlen's Barbecue! Bible and How to Grill: The Complete Illustrated Book of Barbecue Techniques. "I learned a lot from How to Grill," says Perilagu Khan. "It's a great book." From The Barbecue! Bible, alkapal especially loves the Rasta ribs.
Indirect Heat says Serious Barbecue: Smoke, Char, Baste, and Brush Your Way to Great Outdoor Cooking, by Adam Perry Lang, is "a pretty fantastic book." He also recommends Smoke & Spice: Cooking with Smoke, the Real Way to Barbecue, by Cheryl and Bill Jamison.
Leper likes Elizabeth Karmel's Taming the Flame: Secrets for Hot-and-Quick Grilling and Low-and-Slow BBQ. And he says, "For a really interesting take I suggest Seven Fires: Grilling the Argentine Way [by Francis Mallmann]. No one does meat over fire better than the Argentines."