When you order The Mobile DJ Handbook (Focal Press) by DJ Stacy Zemon through the America DJ website, the company will donate a portion of the proceeds from the sale to Ronald McDonald House Charities of Southern California, helping provide a place where families can stay while their children are being treated for life-threatening illnesses.

The Mobile DJ Handbook is the world's best-selling DJ book, offering helpful tips from one of the industry's leading pros on how to make a mobile DJ business more rewarding and lucrative. Now in its second edition, the book provides a step-by-step guide to all aspects of starting, developing, and expanding a mobile music service, from performance and equipment, to booking, sales, and marketing. (www.americandj.com)