The pros of useing Google Sketchup, is that you can see others work and make your own cool work. The program is fun to use and you can make some really cool things. I recommend that you download it.Google Sketchup Download
Cons
The cons of this program are that it is a challenge to learn the stuff. You also can mess the stuff you are working on up all the time. There are more pros than therer are cons, becuase the program is so fun to use when you learn how to.How To
Google Sketchup Download