These are one of my luxury items while hiking: http://www.campingsurvival.com/wicaedwifo.html. They are playing cards with images/drawings on one side and a description of most everything you need to identify an edible plant. Plus, they have a hole through which you can pass a carabiner.
I agree that it takes too long to gather anything meaningful outside of the larger fruits. Still, I have been known to reach down and pick a few leaves of dandelion or similar to munch just to remember what fresh produce tastes like...
Farmer Chef - its a great idea. I would prefer a good Kindle book on the subject.
Dogs are excellent judges of character, this fact goes a long way toward explaining why some people don't like being around them.
Woo
You'll want to plant them in a creek bottom. They need rich moist soil. And they are an understory tree, you don't want them in full sun. The three I planted died the first season. I didn't do the things I just mentioned. Its really much easier to find a clonal cluster of trees in the woods somewhere and go pick the fruit in the fall.
There is many wild edibles out there. Start by researching them before eating and you can have a feast during the warmer months.
An ever growing list of wild edibles and in depth write-ups regarding them
http://blog.emergencyoutdoors.com/ca...e-wild-plants/
"In every walk with nature one receives more than he seeks." - John Muir
My Outdoors Blog | Emergency Outdoors - Your source for outdoor, camping, survival and emergency preparedness gear
I've learned that most plants are edible and it's not near as dangerous eating (picking) wild edibles as compared to mushrooms, but of course you want to be careful. There are so many wild edibles that I actually grow quite a few of them in my garden, basically I don't "weed" my garden anymore and they just comeback year after year. However, there are a few veggies I still like to grow, especially tomatoes and peppers, among other things.
Just picked these today:
try you some Indian pipe