First; you start with yourself, birth, where? wife? birth where? children? Second step.Your fathers name, birth, where? death? where Buried Where? Do same for his wife. All children. Third Step. Then Grand-father's name. birth? Where? Death? Buried? Where?Do same for wife.Then all children.
Keep doing this as far back as you can on your ancestors.Then for the missing information, look in census records for that county, state.
Basically, you are beginning your genealogy research and beginnings of your family line branch for your family.Check with all family members, call and ask them questions.You may find [just like I have] they have already researched the information and will share it with you. Good luck with your 'Genealogy BUG!'