Learning how to establish a profitable urban farm takes a LOT of planning and thinking - it's certainly not just about land access and good seedlings. Fortunately, the author of The Urban Farmer has launched this extremely excellent course.
Interesting looking raised bed design -- keyhole gardening.
Sacrificial crops, Composting Loo, Wwoofing, and Bocking 14...intrigued? See this visit to a Permaculture homestead and learn what they have got to do with gardening! Low Impact Living - life on a Permaculture Homestead.