Here are some color grading tutorials for Blackmagic Design’s DaVinci Resolve. Grab the DaVici lite version, it’s free!
Davinci Resolve Lite – Introduction Tutorial:
[youtube=http://www.youtube.com/watch?v=VtLEuX41pjI&w=560]
DaVinci Resolve work flow tutorial:
Intro to Color Grading with Davinci Resolve (for Free!):