I used to work for the University of Michigan; in the mollusk division. Right down the hall was the mycology department.
I met a half dozen new heads of the lab there- and I would say 'what happened to Larry?' or 'what happened to Carl?' ( past heads of the department).
Time and time again I would get the answer that 'it turns out if you eat mushroom x and mushroom c- it kills you'.
Morels can knock you into another dimension if they are not cooked; oyster mushrooms eaten dried but not cooked can help acquaint you with your bathroom.
As mentioned - get a book; and learn about mushrooms. In doubt- don't eat it. And when you do eat a new mushroom to you-- try a small bite first to see if its the chamber with a bullet in it for your physiology.
I love mushrooms- but I only eat what I know for certain I can eat.
Keep in mind too; that its like drinking tequila - you know; one mushroom two mushrooms three mushrooms ....floor.
In other words some mushrooms are toxic to some people at a lower level than others might encounter.
I have a neighbor that used to own an ambulance company. He worked race tracks; and concerts. When he worked Greatful dead concerts he always took cans of sauerkraut with him; as with many people a couple fork fulls of it would bring people down off magic mushroom overdoses in a quick second.
I don't know if that works for any other mushroom; but in a pinch; I would try it rather than drop dead or risk running out of toilet paper.
Some mushrooms can be used for dyes for leather and cloth; and its worth getting a book to inform you of whats what out there.
.....this is the new head of the mycology department.....