Hey, Angela! Welcome! Looks like you're getting off to a good start. As Julie said, add those sources before you get too far along. Believe me, it's easier to source as you go than to go back later on and try to do it then. It can become overwhelming. Even for those people for whom we have personal recollections because we knew them in life we can find evidence like birth certificates, death certificates, marriage licenses, census records for those born by 1940, military records, etc. FamilySearch.org is free and has a wealth of records.