Photoshop Tutorial

I thought Id pass along this great tutorial on how to dodge and burn without damaging your pixels.  Instead its done on a seperate layer.  First have your image open.  Select Layer, new, layer. 
Then you will see this box come up.  Under Mode, change from Normal to soft light, then check the box underneath that says "Fill with soft light layer 50%" then hit okay.
Then on your swatches, if the foreground color selected is black, it will darken any areas you are wanting to "burn." If the foreground color selected is white, it will lighten any areas you are wanting to "dodge." Just make sure all the work you are doing is on your new layer.  

Voila! Then you are done! Here is a finished example.... I slightly dodged the background, and burned her tutu.  Just very subtle. 

Hope you enjoyed this tutorial. Let me know if you have any questions.