Photoshop Help Page
Tutorials!
You may find the tutorial Masks, Masks, Masks! helpful to learning more about masking techniques. Here are a few more Photoshop mask tutorials that you may find helpful:
http://www.photoshopcafe.com/tutorials/masking/masking.htm
http://www.good-tutorials.com/tutorials/photoshop/photo-retouch
http://www.phong.com/tutorials/mask.tree/
http://veredgf.fredfarm.com/tuts/mask/masking.html
http://www.cbtcafe.com/flash/multiple_masks/multiple.html
http://www.graphic-design.com/Photoshop/tutorials/quickmask.html
http://www.sitepoint.com/article/masking-techniques-photoshop
Photoshop is a lot of fun, but it can also be difficult to learn. There are literally thousands of tutorials on the Internet for Photoshop. I would recommend that you explore additional web tutorials by searching for +photoshop +tutorial with Google. If you are looking for more information on a specific tool, try searching for +photoshop +tutorial +toolname. You may also enjoy some of the tutorials available at Worth1000.com, there are a ton of fun techniques.
Credit: http://pclab.cccoe.k12.ca.us/webdes/photoshopcsexp.htm
Scanning and Picture Editing in Photoshop
Basic Photo Retouching tutorial
Step-by-Step Image Salvage creativepro.com
Adobe Photoshop Tutorials and Techniques