are invaluable.  There's something about reading the written word on paper as opposed to on a computer screen, I fully endorse having a bookcase full of good primitive skills books, tracking books, field guides etc. Keep in mind though that reading is only half of learning, you really need to get out in the woods and do this stuff, practice and learn on the job. A nice little booklet on wild edibles. Wilderness Way primitive skills & earth wisdom magazine. Printed quarterly. The Society of Primitive Technology, bi-annual newsletter.
Primitive Skills
The Definative Directory to every Primitive Skills site on the Net!!