Hope this helps.
I am a novice, but have gotten both "Nature's Garden:..." and "The Forager's Harvest:..." by Samuel Thayer recently. Both seem to be very well-written and very comprehensive. I am anxious to start identifying some of these plants come Spring next year.
Disclosure: Do not eat ANYTHING that you do not 100% identify correctly. Find a mentor to help you on your path. You can probably find one through your county extension service.