Here is a list of links to various groups to help you get started.  You can also contact Barbara Sha Cox at 1-765-962-2184 to answer many of your questions.

Grace Farms  http://www.factoryfarm.org

Union of Concerned Scientists for research http://www.ucsusa.org/food_and_environment/

Center for Rural Affairs  http://www.cfra.org/

Sustainable Agriculture  http://www.ucsusa.org/food_and_environment/sustainable_food/