Well, ok, I was interested in the topic so I bought it! $10 for a 15 minute read of material written by a person with a primary grade education about open source HHC information is not "cool!" The "book" lacks an enormous amount of functional information. It would compare to a skateboard made out of a 2x4 and clamp-on roller skates. The "book" sample gives no sample at all, so you will not be able to judge the content without purchasing. I will not request a refund, because I believe the writer must really need the money and I am sure that he thinks this is a Masterpiece.