I can make a guess from a photo, but for a positive ID you need a spore print, KoH test, and microscopic inspection of the spores. A spore print alone is usually good enough for identifying genus, but even experts can confuse the actual species. All of the most deadly mushrooms are in the Amanita genus, and all of them have white spores. If you don't ever eat a mushroom with white spores, your chances of dying from mushroom poisoning will be nearly eliminated. However; there are thousands of little brown mushrooms (LBMs)that can make you so sick you will wish you were dead.
Chanterells, oyster mushroom, maitake (hen of the woods), and chicken of the woods are easy for beginners to identify: but i don't recommend that anybody eat any mushroom unless they are 100% positive on the ID, have done a spore print, and preferably be shown in person whats edible by a local expert. If you do a spore print, and feel confident on the ID, it still might be something that you are allergic too. Start with just a nibble, and wait a day or two before sampling it again. Always do a spore print, and never eat it if it has white spores. Don't eat LBMs either.
To do a spore print: get a white sheet of paper or a white tee shirt, and a black sheet of craft paper or a black shirt. Cut the cap of the mushroom in two, a lay one half on each shirt, gills down. After a few hours you will have a spore print that looks like a white or pink or grey or brownish dust. Those are the spores. The color of the spores is used to help the experts identify the species.