Honestly it's not hours of study. You identify the one mushroom that you're going foraging for, and then you need to know the ones that look like it so that you don't get those by mistake. It's pretty simple if you know what you're doing. Ie: Chantrelles have a symbiotic relationship with Douglas Fir trees, so you're only going to find them around Douglas firs.
> Chantrelles have a symbiotic relationship with Douglas Fir trees, so you're only going to find them around Douglas firs
I'm not sure that's true, I know that we had Cantharellus cibarius ("golden chanterelle") growing up everywhere in the woods, but I don't think the Douglas fir even exists there, never heard that name before. The forest was mostly oak I think.