The book is based on individual essays on various topics. Each topic is explored by a different " Expert". Many of these skills are in danger of being forgotten, so for this alone its a good book. What really needs to be considered by the compiler is new info, with new photography and updated , clear instructions. Many skills here, such as Brain tanning and stone tools, to name a few, are quite good. There are a few selections that are a bit foggy in their rendition.Its a good reference book anyway for taking with you when outdoors to learn...one at a time. Many folks buy these kind of books thinking they can just turn to page 84 and learn at a glance, some hard won skill. Not so...These all take a lot of practice and hard work. Try fire making first, shelters,food gathering and storage. These are essential. Learning one skill...well, over a summer; even several will take you a long way. Remember to lower your standards to SURVIVAL. Its generally not pretty, but you do gain one day...then another and also you gain the courage to try and the experience to succeed. Enjoy learning what our ancestors had to learn...or die!