I bought a book called You Can Farm a number of years ago from Poly Face Farms written by Joel Salatin and this along with a few of his other books have radically changed my world and I highly recommend.
A full review will be coming soon as I have just purchased the audio book the Audible.com.au check it out you can get your first book free.
You Can Farm: The Entrepreneur’s Guide to Start & Succeed in a Farming Enterprise