Ethan Luo explains color correction in Blender.
Weelian Soh writes:
Ethan Luo or CongCong009 has produced an excellent video presentation explaining color correction and how to accomplish it in Blender. I personally have learned a lot from watching it. Highly recommended for anyone wanting to know more about Color Correction in Blender.
You will have to excuse Ethan as he is not a native English speaker, but I personally have no problems understanding what he is trying to explain.