Earlier this year the Meadowbrook Community Gardens and Orchards Guild held a study circle of Martin Crawford's excellent new book, Creating a Forest Garden. The book is comprehensive, practical and accessible by even beginning gardeners. I would liken it to Sunset's Western Garden Book for the environmentally aware.
One of the key practices we can pursue towards the goal of reducing carbon emissions into the atmosphere is to convert our gardens to no-dig, low-irrigation, attractive and edible gardens following the plan Martin presents in his book. Check out the video posted on this SustNE ning site.
The Permaculture Design Guild wants to conduct another study circle of Creating a Forest Garden. If you are interested please let me know.