Freedom
I would strongly recommend Anne Sheffield's Book entitled Depression Fallout. It is specifically written for the family members of Depression sufferers. I would also highly recommend her message board as well. This is where I started back in April and the site helped me a lot. The people communicating there were very helpful and occasionally Anne will share her insights too. I've since moved on to this site because as my situation evolve as other things entered the mix.

http://www.depressionfallout.com/