Sure. In terms of book, I'm not sure. But, I can link to you to some of the things you can do.
http://www.playerdevelopment.usta.co...inewsid=249182 I'd suggest Straight Leg March (under Dynamic Warmup),
-Under Run Form - High Knee March (with Arms),
-Butt Kicks (I'd suggest running around the entire court doing it rather than stationary though!),
-Under Movement Training - LATERAL ALLEY DRILL [basically start on white line (at the end of the court) and SPRINT to the other white line and back before running to the next closest line (and back... until you reach the original line you start at)] It's referred to as suicides by most players. It HURTS so good.... you feel/see results quickly!. This site calls it Horizontal Repeaters and shows you a line motion. I normally basically do a zigzag (a variation on what they tell you) - go wide/long width --> until you get to the very narrow end width. This way, you don't need to stop between sprints... *Don't expect to instantly be able to do 5 minutes; it's tough but so worth it...*
-Strength training: Lunges with resistance. Every time you have to pick up the balls, force yourself to pick them up that way. AND before you leave, go the entire width of the court doing that there and back. You'll be sore ... in a good way.

-Another conditioning I normally do is
http://www.sport-fitness-advisor.com...ty-drills.html similar to the Lateral Feet Drill/ Five Count Drill. Try doing it over just one line for a few minutes. Very tiring but once again rewarding for weight loss!
It may not help your hitting technique, but it will whip you (literally) into shape. You'll be much more agile and improve at running quickly. There is a reason why tennis players are in good condition.... the conditioning is tough. Try it and tell me how it goes.

Even 20-30 minutes of this 3x a week should help expedite your weight loss... a lot.