The price of some powerful new genetic genealogy tests has dropped below $100. Genealogists and adoptees are using them and other DNA tests to identify ancestors, confirm relationships, and measure their ethnicity.

Unfortunately, there are many similar sounding tests and some of them have different testing levels. So it’s easy to order the wrong test or pay too much.

This Guide to DNA Testing provides an easy-to-understand introduction to the different test types, their strengths and limitations.

Author and adoptee, Richard Hill, shared his personal success story in his book, "Finding Family: My Search for Roots and the Secrets in My DNA.”

Now he boils down the basics of genetic genealogy into this concise summary. Learn which tests are right for you. Hyperlinks to specific tests and resources are included.