The Audubon is probably the best if you only get one book but I suggest getting several.
I also pick many kinds like Brownie but I trust my books and proper ID before I trust what anyone tells me. The more I learn about mushrooms and hear the various local nicknames, myths and wives tales that surround them the easier it is to understand why there are so many poisonings.
The only real way to ID mushrooms is to study them. Learn the parts, cap, stalk, gill, spores and all the terminology used to describe various forms of all the parts. Learm cap attachment rings, gill spacing, etc and also learn how to make a spore print. it all seems daunting at first but the more you learn and the more species you ID the easier it gets.
A fellow came over the other day with a half pail of beautiful oysters and asked "Are these the right ones?" I told him yes they are but not to ever believe what someones tells them about mushrooms, including me. I got out the books and went through the entire ID process including making a spore print.
The Audubon book has an axellent spore print charts that describes gill attachment, veil typr, habitat and distinctive feature, match all those and the spore print is the final positive ID.
Brownie, have you tried Orange JellY, it make a dramatic color addition to a dish.