This series of essays written by Duck Blust, Jr. was originally published on Kifaru's website in mid-2004. They detail a navigation system utilizing map, compass and GPS, with a focus on the UTM coordinate system. Although written for the back country hunter, the system outlined is applicable to any wilderness traveller.
It is the best instruction I have encountered for back country navigation, and is something that I have referenced frequently since its publication. In 2011 I was able to attend a class with the author, which was organized by members of the Kifaru Forums.
Years ago I had printed out a hard-copy that I kept in a binder. Wanting to replace that with an e-reader friendly version, I have formatted the text as Markdown, suitable for processing via Pandoc. I have cleaned the essays slightly, fixing some typos, making the formatting more consistent, and inserting a small number of footnotes to point to useful resources which have appeared since the initial writing.
$ pandoc -S -o backcountrynavigation.epub title.txt chapters/*