When doing genealogy you start with yourself and then your parents, your grandparents and so on.
Sources that will help you in your research:
Older family members
Birth and Death records
Wills and Deeds
Church and Cemetery records
Old letters, old diaries and old newspapers
Old photographs(that may have a date and place written on the back as will as the names of the people involved).
Migration Patterns of early settlers
I hope this helps someone with their research