Or if you have a local field study centre, see if they run a one day course with an expert. It won't cost too much and might save gippy tummy or a trip to A&E. I've tried learning it from books and :sick: .......
As for chicken of the woods - it does grow on many different trees but:
".....causes mild reactions in some, for example, swollen lips" or in rare cases " nausea, vomiting, dizziness and disorientation." This is believed to be due to a number of factors that range from very bad allergies to the mushroom's protein, to toxins absorbed by the mushroom from the wood it grow