When you get up in the morning to have your coffee, you will go outside and check all your plants in turn, and gradually you’ll begin to get a feel for the minute details that indicate that the plant needs more water, needs more shade, or what stage it’s at in terms of fruition, all like some kind of biological twitter feed. This will be immensely satisfying for you. 

All that is interesting and whatnot, but I want to know what I can do to forage my own food. The most obvious food to look for in my mind is mushrooms or fungi. And, it just so happens there’s a Mycological Association in every state. I think I may sign up and start foraging shrooms.