I had to kinda hurry to go through DD's "Edible Forest Gardening" set - took me months and that was just skimming. Too much info to absorb in limited reading time. Currently re-reading Intro to Permaculture and Gaia's Garden, trying to absorb more.
Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize that we can't eat money. Cree proverb