Looking For Fresh as in fresh Mushrooms

You were very wise. Too many fungi look alike. For example, the death cap (does what it says on the tin!) is almost imperceptible from some edible ones. There are also fungi (ergots) which grow on crops such as rye and wheat and, if eaten, can cause hallucinations, 'tummy upsets', a limb to fall off (dry gangrene) and abortions. I studied fungi, along with other microbes, at Uni but would definitely not pick and eat but a very few, very distinctive, types - and most of them have the texture of slime!