mine is near identical to that one, but ive got no idea how to use it. Ill peruse the links all of you provided, but i really am more of a hands on learner any way. maybe I will get a topo map of the area I go fishing and camping at up near kremmling. I know the area, so at least I wont get lost. Ive been going there since I was about 5 or 6 years old. It really would be fun I think.