I served in the Marine Corps for 10 years as and infantryman and in a Recon Battalion. I mastered the use of Land Navigation then and in jungles and deserts. As TraditionalGuy experianced, back in 90 we got one of the first gps unit's which was big and bulky. I would always test it's direction with my lensetic compass and found the compass to be reliable, besides the gps ate through batteries, and that's alot of weight. I am sure the technology improved greatly. Since 86, I have carried a lensatic compass and never been lost. Advice, don't go cheap on the compass and stay away from liquid filled. This is an investment of a lifetime and depending could decided how long that is. Take you compass outside to back yard or a park, and orientate yourself to it, and get confidance it's correct (don't want to be in a thickect and have doubts, this has eliminated alot of guys from selection). After you become confident in that it is correct, go to one of the site's that the other member's said and study land nav. Now you don't have to be in the middle of a jungle to learn it or on a mountain top. Most of the training takes place in an area as a park, print off a satelite map or topo of the park, then use it and compass to master the skill on small level. Then you can stretch out and go into bigger areas. Remember, that a compass is effected by metal, so put down weapon or metal and stand 6' away to ensure not to throw off azmith (downfall of alot of butter bars). This is a skill you will have for a lifetime, so what you put into it like all traditional hunting is what you will get out.