Spelling of surnames. Old country origins or ethnicity of your family. Family lines often become entangled with the re-telling of stories. Compiling a family tree takes time. Don't expect to complete the project in a couple of months.
Genealogy is a fascinating and rewarding hobby.
However, it can be time-consuming and it is addictive. Just 10 generations, or approximately 300-350 years back, you will have 1,024 ancestors, and by the time you have identified them all, you will need a large chart on which to display them. Just be sure you have the right characters perched upon your family tree.