I use a android app called Pl@ntNet . Take a picture then it ask if it's a leaf flower or stem.....have identified most the weeds on my property ... most are edible...or have medicinal uses of some sort.... . Like the last find.. sticky Willie or clingers........
Get name ,verify 3 or 4 ways...then ask google... uses for or nutritional properties....Mostly just ends up being rabbit food😁