The stars, moon and Sun ain't worth a tinkers dam for navigation if you can't see them. Chance sez you are gonna get lost when it is overcast and/or you're in the middle of a forest and can't see the night sky. Even the best compass for survival work is a hand grenade accuracy, so finding north quickly (even magnetic north) and a couple landmarks and you can pretty much orienteer your way to safety.

The best navigation skills I could recommend to anyone is learn the law of sines. You can get yourself out of a lot of bad situations just by being able to triangulate your location. Of course, having a laminated piece of paper with the sine table on it beats having to memorize it. <img src="/images/graemlins/wink.gif" alt="" /> <img src="/images/graemlins/wink.gif" alt="" />