Many people begin their family tree search knowing next to nothing about their own grandparents and great-grandparents. Sure, you know their names, and perhaps their date of birth, but do you know when they were married? What they did for a living? Where they lived when they were growing up? The names of their siblings? Without at least some basic knowledge of your family tree, you're likely to quickly find yourself spinning your wheels online. That's why a good genealogy search should always begin at home.