To read later on good recommendation. Finally, a permaculture article that doesn't read like a religion. Permaculture may well be the key to sustainable food production, and this article focuses on the practical, biologic dimensions, so you can apply the basic concepts in your own garden or farm. Suggestions and examples are given.
Permaculture Principles for Practical Gardeners and Farmers - One Acre Farm
"Permaculture in Practice: This video, whose aim is to inspire people to start their own permaculture projects, shows how permaculture is practiced in four very different settings: a backyard garden, an urban community garden, a co-op restaurant garden, and a small farm."