Tom Brown's books have had the most influence on my life and learning how to survive in the wilderness and off the land. Here is an interview of him. He gives some of the most important basics of wilderness survival.
For the past 40 years I have read a majority of the survival and wild edible and medical plant books and Tom's books are by far the best. One I use the most both for myself and teaching others is Tom Brown's Field Guide to Nature and Survival for Children. It says for children but it is the best and most practical and fun book for learning wilderness survival skills that I have come across.