I picked up this book a few years ago when it was offered through Amazon either free or cheap. I never got around to reading it. Although it includes some information about DNA testing for genealogy, it's not really the book's main focus, in spite of its title. Far more time was spent discussing paternity issues than genealogical uses of DNA. The author begins using abbreviations without ever explaining to the reader what those abbreviations are. Much of the technical jargon will lose lay people in search of information on direct-to-consumer DNA testing. He never really addresses companies offering genetic genealogy tests. He also never addresses tools that can help in analysis of DNA--and there were several around when the book was written. Of course, the book is now dated because of the ever-evolving DNA industry. The book needed better proofreading. Persons in search of a good primer on DNA testing are better served by Blaine T. Bettinger's The Family Tree Guide to DNA Testing and Genetic Genealogy or Blaine T. Bettinger and Debbie Parker Wayne's Genetic Genealogy in Practice. ( )