#3. "RE: Nikon D5000 "PRE" White Balance (how to use...)" In response to In response to 0
I have nothing to add to the excellent advice given other than to say there is one more option: put a gray card (if possible) in the scene, take a shot, remove the gray card, and you can adjust the WB in PP by using the midtone picker in any given PP software with the rest of the shots taken in the same situation. This one works well: http://www.lastolite.com/ezybalance.php Plus, it takes up little room in your bag and can be used to either pre-set, or after the fact setting, as mentioned above.
I think a photography class should be a requirement in all educational programs because it makes you see the world rather than just look at it.