In particular, know how to identify the common and deadly species (eg: much of the genus Amanita) yourself, and get multiple trustworthy field guides for your part of the world.
In particular, know how to identify the common and deadly species (eg: much of the genus Amanita) yourself, and get multiple trustworthy field guides for your part of the world.
I think the most common advice is, “if you live in an area where this edible mushroom and this impossible-to-tell-apart poisonous lookalike both grow, don’t pick either of them.”