I read the story about a technical author that tried to self publish a small book. None of the traditional publishers wanted to do his small pocket guide. So he went to do the publishing himself. The bottom line was that he made about $3k a month in the end. Not too shabby.Read about his adventures first hand. His marketing angle was to give away free PDF versions of his book. That turned out to be a good ploy. He is also trying to get into cheap Kindle eBook sales. Check out his 99 cent books.