Get DNA Answers: Your DNA Guide—the Book

With our ultimate DNA manual, you’ll learn how to to discover who you are and where you’re from using your DNA test results. 

Find relatives. Figure out who your DNA matches are. Identify unknown ancestors. Your DNA Guide—the Book takes you step-by-step through the various ways of using DNA to answer questions about your origins. And it’s all in plain English! 

DNA has the power to help us discover who we are and where we come from. But using DNA to explore these questions can be tricky, frustrating and even confusing.

Your DNA Guide–the Book is your solution for learning to make confident DNA discoveries! It delivers powerful, plain-English, step-by-step paths for your specific DNA questions. Curious about how you are related to your DNA matches? Go to page 40. Learn how to discover who your 2X great grandmother is on page 36. 

Throughout the Book, you can check your progress and get new guidance. Are your matches unresponsive? We’ve got ideas. Did you just realize your great-grandparents are first cousins? We’ll help you figure out how that affects your research. (It does.) Along the way, you’ll learn new terminology, strategies and tools as you need them.

With the self-guided, step-by-step Book in hand, you can start making DNA discoveries more quickly and efficiently. You’ll build confidence that you are doing things accurately. And you can return to the Book whenever you have a new question: just follow a new path.

Your DNA Guide–the Book empowers you to make discoveries about your family history. Knowing your family history can help build more resilience, self-confidence and a stronger sense of place and security–for yourself and your relatives. And everyone could use some of that! 

About the author

Diahan Southard is a globally-renowned genetic genealogy educator who has helped thousands of people use DNA. She has poured 20 years of experience into creating this self-guiding resource that can help everyone–but still customizes each person’s discovery path to meet their needs.


Expert praise for Your DNA Guide—the Book:

[Diahan’s] friendly, familiar tone could convince anyone that they can figure out this whole “DNA thing,” and with Southard’s clear, step-by-step instructions, they can. – -Mary Kircher Roddy, FGS Magazine

“It’s definitely not a ‘big overview of DNA testing’ book, but instead a ‘let’s get down and dirty and solve a brickwall problem’ book. And we definitely need a book like this.” – Drew Smith, The Genealogy Guys Podcast and Genealogy Connection Podcast

“Diahan Southard is…funny and down to earth. Her presentations are always filled with color and graphics and explain the sometimes overwhelming topic in a simple and easy way to understand. She’s put her style into her first book on DNA.”

This book is unique. My first thought was this is just like the choose your own adventure books I used to read as a kid. It’s almost like having Diahan there to hold your hand while you work your way through your matches and find your family!” – Cheri Hudson Passey, Carolina Girl Genealogy

Print edition $39.99 USD

The hands-on, mark-it-up-with-sticky-notes-and-highlighters print edition

Shipping is only available in the U.S. and is free

Customer Reviews

Based on 13 reviews
Tina Swyers
DNA Guide

I love the book, but am still stuck on finding matching DNA for my childrens’ great grandfather whose parents were killed in a fire and he and his two sisters put in an orphanage and he was adopted.

Vera Hill

My reaction to the book was, "Wow! I didn't realize DNA was such a confusing subject."

Steven Richardson
Very Helpful Guide

I like the book so much that I gave it away, then had to buy another so that I could do the Ancestry course.
I'm still unclear on how to interpret X-chromosome matches. Maybe reading that chapter a few more times will help.

Wow! I bet whoever your shared your book with is very grateful to have a friend like you! XDNA can b tricky to work through, we have a few XDNA tips on our webiste as well:


I have found it helpful but haven’t solved my issue yet. Will keep trying.

Thanks for your review! We would love to help you along the way, feel free to shoot us an email with any of your questions!

Beverly Smaby

I love this book. It allows you to get right into your particular DNA challenge and learn what you need to know, as you need it. Plus, it has a very refreshing, accessible, and inviting style.

Thank you! We're glad to be a part of your DNA learning!

Ebook version (PDF) $16.99 USD

Portable, accessible from anywhere, with clickable links to navigate in the book

Available to everyone, including outside the United States

Customer Reviews

Based on 12 reviews
Steven Wassom
Struggling with Navigating the eBook

When I click on the hotlinks to go to the suggested page, there's no easy way to go back to my original location. This is on an iPhone using the Books app.

Peter Tonkin
Great book

A very comprehensive e-book. Using the link to the next relevant section is an easy way to navigate the book, and to understand and develop the required research steps. Thank you for putting this together.

Thanks for your review! So glad you're enjoying the book!

J A Edwards

might be easier to use when skipping around than my older paper copy...

Chelsea Bowen
Great resource

This is a great recourse as I am trying to help my cousin find his birth family. But it also has a twist, his bio mom was also adopted.

Thanks for your review! What a surprise to find that out already! Good luck on your research and feel free to reach out to us any time with questions!

Donna Yarbrough
excellent guide for DNA beginners

This information was an excellent guide for me. I knew nothing about how to use DNA in searching for ancestors. You will find something useful in this guide even if you have been using DNA for awhile.

Thanks so much for your review Donna, so glad we could help you learn more about finding your ancestors!