I knew plenty, but I suspect that we live a stone throw to far away.
But here is a tip I always tell beginners, learn about the poisonous bolete style mushrooms (in my country there is just one, the Rubroboletus satanas) and if the bolete style mushroom doesn't look like it, taste the mushroom. And if you don't spit it out directly, then it's not the Tylopilus felleus (not poisonous, just utterly disgusting) and you can eat it. But check if you have more than one poisonous in your country.
But what about that foraging guy in River Cottage? Doesn't he hold courses?