Any pointers?

I'm thinking of starting. Since Wendy's and sushi is not cheap and there's a lot of rando trees in my city, I figured it might be wise to seize the opportunity. So far I've found hedge berries, raspberries, crab apples, apples, and the occasional potato in people's yards who forget to lock up. I might get a canner and start making jams if I find some strawberries. I often see hares in the park-path across from where I live, so learning to hunt is the next step.