I happened on Color Grading Central 2 weeks ago and watched all of the free tutorials Denver Riddle has posted. The tutorials go through basic color correction in Final Cut Pro X, but can be useful no matter what editor you are using. His videos are very well produced, and definitely worth watching!
I know there is a lot of fuss being made about FCPX and the lack of their color correction program "Color" but these videos show you what is actually possible within FCPX, and it's actually pretty great!
Did I mention they are free???