The Channels and Masks training I mentioned above taught me all about selecting using channels and doing non-destructive editing. If you can relay that information, I definitely think you should. I'm amazed that I ever got by without knowing how to do that stuff.

I especially enjoyed learning how the various selection tools really work and which ones are best for different scenarios. Awesome stuff. Just that training video alone was enough to make me feel more confident and more like an intermediate to advanced user. So again, please feel free to create a new thread and rant away.