I didn't get a book, but it would be fun to make one in increasing difficulty that would teach all navigation.

Orienteering is a tough subject, but can be learned with a series of simple exercises. Personally, I wouldn't train anyone who had no interest. I would jump at the chance to teach someone who was interested as I'd learn, too.

It can take tons of practice.

The first thing I think I'd do is have them learn the length of their pace. This can be done easily on a football field.

Then I'd have them see how close they can come to measuring a mile on a trail. I think a 5% error is something reasonable to shoot for.