The first person you interview is yourself, then your parents, grandparents, etc. Repeat the question substituting parents with grandparents, great-grandparents, etc. The name that a person is born with is the name that you use. The three major events in your life are birth, marriage, and death.
Every event occurs at a location somewhere in the world.
My grandfather Pietro Alessandro Piccirillo was born 1 November 1867 in Lucera, Foggia, Italy. He immigrated to Newark NJ in 1902 from Italy. You need to record the location in order to verify the data with official sources. Before you go off and interview your relatives, develop a plan to interview the same person several times. Each interview should be at least several weeks apart.