Context: after eating a death cap (Amanita phalloides), you'd notice a few of the symptoms at first, but these usually resolve after a day or two. After this, you'll enter a latent phase where you feel fine, but your liver and kidneys slowly start to fail. By the time you notice, it's usually already too late.
Good advice, but respectfully there are some trustworthy books. So long as the reader actually follows all of the verification steps in those books.
And definitely not those fly-by-night, probably AI-generated 'slop' books online!.
My wife & I only moved out to the west coast in our 40s, and in the decade since, we (slowly! carefully!) learned how to recognize the safe species. Just don't take any stupid risks -- be absolutely sure of an ID before eating. Show what you've collected first, if it's a new one, to someone local who knows and learn from their experience.
One good book is All That The Rain Promises ...
The cover of that book is something else hahaha