"Recreational Genetics" are a thing. Apparently, an estimated 26 million people worldwide have dug into their ancestry with the help of at-home DNA kits such as Ancestry or 23andMe . But finding your family story requires more than learning ethnic percentages from a DNA swab. That's where genealogist Kenyatta Berry comes in. She's a lawyer and co-host of PBS' Genealogy Roadshow. Berry visited On Second Thought to talk about her new book, The Family Tree Toolkit: A Comprehensive Guide to Uncovering Your Ancestry and Researching Genealogy.