Ok so looks like there is more then one of these. One by Margaret Matt & one by Wynn Kapit,Lawrence M. Elson. I am going on vacation to Montana next week right before I start school and thought this might be a fun thing to play with. But which one is the popular one and also any tips on how to use it for learning purposes? I know that sounds really stupid, I do know how to color. I mean are there certain color schemes laid out or do you just start in?Thanks