I'm just a babe in the woods when it comes to understanding channels, but after watching the little demo that came with the free tools for Elements that Richard Lynch provides, I tried the Channels adjustment on this image. I'm glad I did. I'm now going to install the rest of the tools that came on the CD with the book. Learn more about it here: http://www.hiddenelements.com/
While I use the full Photoshop more than Elements I think I'm going to learn a lot about tools I don't use by reading that book and really "getting into it"!