Reddit reviews Mushrooms and Other Fungi of North America

My favorites are:

Roger Phillips Mushrooms and Other Fungi....
https://www.amazon.com/Mushrooms-Other-Fungi-North-America/dp/155407651X

David Arora Mushrooms Demystified
https://www.amazon.com/Mushrooms-Demystified-David-Arora/dp/0898151694

Audubon Society Field Guide:
https://www.amazon.com/National-Audubon-Society-American-Mushrooms/dp/0394519922

DK Mushroom Book:
https://m.barnesandnoble.com/p/mushrooms-dk/1127751094/2689838557184

This last one is a big beautiful hardcover book with a lot of different mushrooms from around the world and some excellent pictures:
https://www.amazon.com/Book-Fungi-Life-Size-Hundred-Species/dp/0226721175

Other than that it would depend on your region because I have some guides I love that focus on my region.

The two you've listed are my personal favorites. I also make use of National Audobon Society Field Guide to North American Mushrooms, 100 Edible Mushrooms, North American Mushrooms: A Field guide to Edible and Inedible Fungi (not my favorite, but a useful cross reference at times), and Mushrooms and Other Fungi of North America (this one has fantastic photos. While it is never recommended to ID by appearance alone, the cross cuts and underside photos in this book can be very useful). If you live in the southern east coast then I'd recommend Mushrooms of the Southeastern United States if you can find it affordably (as far as I know it is out of print and even used coppies are pretty expensive, but it is a fantastic book for southeastern mushrooms).

As far as websites I am a pretty frequent visitor of MushroomExpert.com. It offers some good keys and there are a lot of mushrooms listed.

NC rank amatuer here - When I was just getting into it, a couple of mycologists recommended two guides: A Field Guide to Southern Mushrooms and the 1991 ed of Mushrooms of North America by Roger Phillips, which I believe has been superseeded by this book. Alas, the local mushroom club disbanded and the experts moved away before I gained confidence in self-identifying and eating more than canterelles, morels, hen-of-the-woods, sulfur shelf and oyster. And since then, our favorite morel grounds has become a series of soccer fields. But, I still find oysters with some regularity on river walks where I know the terrain and the downed trees. That may be way too basic for you, but do check out FG to Southern Mushrooms.

Take a look at the North American Mycological Association and find a club near you!

Also I'd recommend Roger Phillip's book to start out with. I'd also look for a book that was made specifically for your area of the US.