The training is based on the writings on Dr. King and Gandhi, but more King. I would reccomend reading stride to freedom from Dr. King, especially the section which you may find on line called "pilgrimage to non-violence"
I think the idea of everyday non-violence sounds great. I started to write something like that for my blog and have yet to finish it. I will at some point but time has been limited for me lately.
I don't know anything about that workbook, but I would be interested in it.