Joel Salatin: You Can Farm -perspective building, general advice, wish i picked it up before I started.
Eliot Coleman: The New Organic Grower -almost the perfect book on how to grow vegetables on a smallish scale organically.
Gene Logsdon: Contrary Farmer -perspective building, thought provoking.
Richard Wiswall: The Organic Farmer's Business Handbook -if you really want to do this as a business, you need something like this.
Mark Shepard: Restoration Agriculture: dramatically changing the way I think about my future farming plans. Also wish I found it 5 years ago.