If this type of information interests you, Eric will be teaching a class near Philly in September.
Intermediate Edible Forest Gardening with Eric Toensmeier
Friday, September 7, 2012 at 11:00 AM – Sunday, September 9, 2012 at 3:00 PM (PDT)
This class counts as credit towards a Permaculture Design Certificate from The Mycelium Collective.
I hope to start scheduling fairly regular classes of my own starting in September.