Brittany, my friend, got me started on this thing called Picnik. It is so cool. It is a place you can edit pictures, and the best part is it is not even that hard. :) I have not done it for very long but you learn what things do what pretty fast. Some of the things that Brittany does is way better than me (but she has had it longer).
Here are some of the pictures I have done. (and the collage thing was on Picnik too)