Hi Nora, welcome to WikiTree. I see you have added your parents and one of your grandparents. To help us help you to connect to our one family tree we will need some information about deceased relatives. Since your parents appear to be alive, I suggest that you start with them. Get the full names of their parents, including maiden names of their mothers, and their dates and places of birth, death and marriage. If they know information about their grandparents, even better! The more information you can start with the easier it will be to add connections for you.
Good luck with your research!