Hi Laura, welcome to the WikiTree community as a guest!
To start adding your family/ancestor to the tree you will need to upgrade to Family Member. It is totally free!
Welcome to WikiTree & G2G, Laura! David gave you some very good advice. You don't have to have a GEDCOM, you can just start adding your family's profiles if you upgrade. You are going to connect to the bigger tree at some point.
PS: Nice name