This book covers a wider range of mushroom species and growth parameters. I would definitely recommend this book to anyone interested in growing mushrooms. I've used specific recipes from this book to mix my own agar for petri dishes, make my own mushroom spawn, and growing substrate. I've used the recommended temperature/humidity ranges with great success for growing Oyster, Lion's Mane, and Shiitake mushrooms. While there have been improvements on some of the techniques and ideas outlined by this book, since it's last revision, this book still offers the most complete and decisive understanding of mushroom cultivation as a whole. This is great book for beginners and experienced growers alike.