This is a new discovery for me, so you 'older hands' are probably not too interested. But it seems that there are new designers coming to this board every week with questions. Maybe this will help forestall more basic questions. I've added these to my Favorites so I can refer back to them often.
Most of these sites have no pop-ups, or perhaps just one. And these are tutorials, not book ads.
Virtual Learning Center: Burn, Dodge, and Sponge:
http://iit.bloomu.edu/vthc/Photoshop/Enhancing/burning.htm
Jay Arraich's Photoshop Tips - Dodge and Burn:
http://www.arraich.com/ps6_tips_ddodgeburn1.htm
Photoshop Support - application of Dodge/Burn to photo retouching:
http://www.photoshopsupport.com/tutorials/jeff-alu.html
Author says:
"Next, I dodge and burn the image using the Dodge and Burn Brush. I alternate between the two brushes while working on an image. When using the burn brush, I always have the range set to "shadows", and when using the dodge brush, I always have it set to "highlights".
I never dodge or burn the "midtones" of an image. I very rarely set the exposure above 15%, unless I'm trying to completely burn out the sky, in which case I will set it to 100%."
I never dodge or burn the "midtones" of an image. I very rarely set the exposure above 15%, unless I'm trying to completely burn out the sky, in which case I will set it to 100%."
Web Design Library - Adding Eyeshadow (sound the klaxons for skin designers!)
http://webdesign.templatemonster.com/web/photoshop/photo-editing/burningdodging-adding-eyeshadow.4742.html
Simtropolis - excellent BASIC tutorial on Dodge/Burn and how to fake Ray-Tracing!
http://www.simtropolis.com/content.cfm?mode=omnibus&view=130
Digital Darkroom, "Get Your Dodging and Burning Under Control" (Adobe PDF file, so you need Acrobat reader at the least, but the detail here is worth it)
http://www.thelightsright.com/DigitalDarkroom/Tutorials/GetYourDodgingAndBurningUnderControl.pdf
About.com: Sue Chastain has a wealth of excellent Photoshop info on her site (I used to work for About.com, they really do try to get experts for a topic like this) This is her writeup on Dodge, Burn, and Sponge tools - might be repeating some of the above info but sometimes a writer's choice of words can be the difference between drawing a blank and having a light go off.
http://graphicssoft.about.com/od/photoshop/l/bllps508c.htm
I found most of these links in about 15 minutes of searching. Reading and comprehending them, of course, takes much longer. But I continue to be astounded by the reach of the helpful Photoshop information out on the web.
Feel free to tack on your own links if you want. I know some of you have some great tutorials of your own out there.