Free Photography Class

I just heard (and signed up) for a free 4 week photography course!! The course is taught by photographer John Greengo from the PBS series Art Wolfe’s Travels to the Edge.
It Says:
Want to enroll? Sign-up here: Digital Photography Course Enrollment.
July 15: Week 1 - Overview. Life of a World Traveling Photographer.
July 22: Week 2 - Your Camera.
July 29: Week 3 - Your Technique.
Aug 5: Week 4 - Composition Secrets.
You’ll learn things like how different aperture settings on your camera effect depth of field, and why that matters for your images. More importantly, you’ll be inspired to take your personal photography to a deeper level.
And it says that its even good for us "point and shooters" too. Even though I would LOVE an SLR, I just can't afford it right now, so any tips for my point and shoot camera is awesome!!
Anyway, just thought I'd let you all know about this, it sounded great to me!! :)