Does anyone know where I can find out more information about target heart rate? I want to learn more about fat burning heart rate and cardio heart rate. I heard this commercial today that talked about using your heart rate for weight loss. Any suggestions would be appreciated. Thanks

There's a ton of info you can find, I found about 10 good links just googl'ing "Target heart rate"
It's very dependent on your age, size and how in shape you are, but you can easily find a chart and compute your specific target heart rate
What I've always read & been told is that there are basically 2 target heart rates, one for cardio and one for 'fat burning'. The fat burning target rate will be lower than the cardio heart rate and is meant for longer activities/workouts (eg Walking or light jogging for an hour or more). The cardio heart rate is meant to be your target heart rate for more intense cardio workouts (usually 45 min's or less), eg stair stepper's, elliptical trainers, ...etc.

Thanks Dan! I also found a lot of interesting information on calculating calories.

Also you can take 220 - age. *Take the number you get and that is 100% of your heart rate max. Now multiply that number by 65 % and 85%. That will give you the range you should be in. With the talk test the 85% will feel like you can still talk but would rather not. The 65% will feel like you can carry on a conversation but not sing a song. That is the area that you should be in. If you are just starting out take it slow and work at the lower end until your body gets use to it and gradually increase. Hope this was of some help.