I just read the book a few weeks ago. It is, as you said, primarily a book about how to have a planted tank with little, to no routine maintenance, with low light, a soil substrate, and no fertilizing, let alone using CO2. That is the Walstad method for a planted tank. But, most of the book is a technical explanation of how an aquarium works, the substrate, the plants, the fish, the feeding, etc. Ms Walstad has some probably incorrect understanding of how plants fight algae (by emitting chemicals that harm algae), and some of her understanding of fertilizing is only good for low light tanks, not for faster growing tanks with more light. That technical explanation I found to be very interesting, and it may explain some of the things I have seen occur in my tanks. It is worthwhile trying to understand all of it, even if it is never applicable to your tank.
I don't know of any similar book aimed at high light tanks. Plantbrain has talked about possibly writing such a book, but, as far as I know he hasn't started to do so yet. Instead he posts technical stuff in his own forum, The Barr Report.