Check out these videos produced by Growing a Greener World. You might start with the one on Community Gardening. Or check out one of their shows on Rooftop Farming in Brooklyn: lots of interesting ideas on increasing production in limited space.
Growing a Greener World® is an award-winning TV show appearing on national Public Television that features organic gardening, green living and farm-to-table cooking. Each episode focuses on compelling and inspirational people making a positive impact on the planet through gardening and shares DIY information that we can all use at home. Currently in it’s fourth season, this gardening series covers everything from edible gardening, urban homesteading and hobby farming to seasonal cooking, canning and preserving the harvest.