This is another area I'm interested in. I've contributed a few spots on this site https://fallingfruit.org and will track down others that I've stumbled across in the past to share.
I did an edible weed course with Green Dean http://greendean.com.au/ quite a while ago. Even though I took copious notes I can't remember what he taught. LOL
Blackberry Nightshade (solanum nigrum) Identified to my satisfaction in my weed patch. If I don't post in the future it's because I stuffed up LOL. The berries are tiny little guys aren't they? Interesting taste. The description of a cross between a tomato and a berry is accurate. You'd need a lot of weeds to make a meal.
I mentioned Green Deans edible weed course. I've also mentioned how I get distracted (so many interesting things to pursue). Well last night I was having trouble sleeping. I was missing something then it hit me. My yard is full of weeds. This has been annoying me for quite some time. Well those weeds had help getting in my yard. I had put them there! I dug around all evening and I found some of my notes from the course. Two edible weeds have been identified Cobblers Peg and Amaranth. I believe I have Cats Ear but I have to look into that more and who hasn't got Dandelions.
I'm super excited about it
There's a couple of Google Map community driven foodmaps showing fruit trees around the place. Also the places listed on this old post
Foraging is something our members do at Garden Visits with permission of the owners. It is a good way to obtain cuttings to grow and excess food from our gardens.
I have a few "top secret" foraging spots. I can get Macadamia nuts and Bunya nuts. The falling fruit site looks good Travis. I'll at least put the Bunya nut on the map (it's on public land). Once my footpath mango gets some size up, I'm happy if people take a few.