This is the book I wish I’d had nine years ago when dad and I tested with FamilyTreeDNA. It is now proving invaluable in helping me finally navigate our tests in an informed way. I’ve also been reminded about biobanking which means, even though dad died a few years ago, I can upgrade and expand his tests – and crucially know how to understand and make best use of the results.

Written by DNA expert Roberta Estes, who you may know as the author of the DNAeXplained blog, it is 247 pages packed with information to help you choose which FamilyTreeDNA test is right for you, and to ensure you get the most out of your test results. Those pages run to 11 chapters, walking you through the types of tests, who they are relevant for, along with their various associated tools.
Whenever I see a book review, I always want a run-through of the contents to see if what’s covered is of interest to me. After all, I need to make sure I’m spending my money wisely. So I’ve listed the chapters, and included the page numbers, to give an idea about what is covered, and the depth devoted to each broad topic.
- Chapter 1: Types of Testing – Y-DNA, Mitochondrial DNA, Autosomal DNA, and X-DNA. Pages 6-10.
- Chapter 2: Setting Yourself Up For Success. Set-up preparations to help get the most from your test. Pages 11-23.
- Chapter 3: Y-DNA – Your Father’s Story. A detailed explanation of test options and goals, which shows how to use your results. Pages 24-96.
- Chapter 4: Mitochondrial DNA – Your Mother’s Story. It explains the goals of this test, covers matches, what they mean and how to take those further. Pages 97-131.
- Chapter 5: Autosomal DNA – The Family Finder Test. Probably the best-known test type, with matches to all family lines. Pages 132-172.
- Chapter 6: X Chromosome – Described as your secret tool that’s included with Family Finder, it shows how this can be used. Pages 173-186.
- Chapter 7: Ethnicity – My Origins. How this is calculated, the caveats around it, plus ethnicity chromosome painting. Pages 187-206.
- Chapter 8: Advanced Matching. A useful, and often-overlooked, filtering tool. Pages 207-208.
- Chapter 9: Finding, Joining and Utilizing Projects. An overview of various DNA projects, what to expect when joining one, and the benefits of getting involved. Pages 209-217.
- Chapter 10: Third Party Tools. Covers Genetic Affairs and DNA Painter. Plus creating a powerful DNA Pedigree Chart to weave the various tools together. Pages 218-224.
- Chapter 11: Creating Your Step-By-Step Roadmap. A useful bullet-point roadmap summary of all the various FamilyTreeDNA tests and third-party tools. Pages 225-230.
- Glossary. This explains in straightforward terms the sometimes daunting vocabulary associated with DNA testing. Pages 231-247.
As you might have spotted from the above, there’s no index. This is a potential drawback, because it is less easy to home in on a specific issue. The chapters though are divided into bite-sized chunks, which are outlined in the chapter sub-headings and these sub-headings might, in some instances, act as a proxy index.
Throughout the book, there are plenty of graphics to help illustrate and explain, and there are also handy associated tip boxes.
Understanding DNA testing can be bewildering, and there is no doubt that this is a book which requires concentration. But it does help explain a complex subject, and makes it more accessible to those of us with less grounding in science.
The Complete Guide to FamilyTreeDNA is published by Genealogical Publishing Company, and is available in eBook, non-colour paperback and colour paperback formats – so there are a choice of reading options and price points.
Be aware, there are pros and cons with each.
I have the full colour paperback version of the book – something I welcome, given the number of charts and diagrams, the meaning of which might get lost in the black/white/grayscale paperback. But the colour paperback version does cost more, and price is an important consideration. Checking the Genealogical.com website, there is a free colour supplement download available for selected pages, so this could provide a workaround for the non-colour paperback. And the eBook is in full colour.
I personally prefer a physical book, as best suited to my reading and learning style. The drawback of the paperback format is the absence of footnote hyperlinks to take you directly to the DNAeXplained website references. I imagine you’d get that with the eBook version.
My edition was published in August 2024, ISBN 9780806321400. I’ve attached the Amazon link, and also the Genealogical.com link for all versions.
My conclusion. If you have invested in testing with FamilyTreeDNA, I’d say it is worth the extra outlay on this book, to make sure you’re getting the most from your results.
Full disclosure: I received a free copy of the colour printed paperback book from Genealogical.com in return for a honest review. I have expressed my truthful opinion in the above review.


I’ll start with an admission: My 2018 blogging year was not as prolific as usual. In fact it was nowhere near the efforts of previous years. But I’m far from downhearted. In fact I’ve thoroughly enjoyed it and I hope you have too.













