Wow! What a interesting day. I have another reason for working more with my 40d.
There is a great tutorial over at DPS by Natalie Norton that I am loving. It gives a simple break down of the stuff I am working on.
http://digital-photography-school.com/blog/moving-toward-manual-settings-understanding-aperture-a-beginners-guide/
Also there is a good blogs or articles at http://www.natalienortonphoto.com/ which has a what’s in your bag interview with different Photographer.
Neat!