Welcome, Mary!
You have made a good start just by adding your father. That's how we all got our start — one profile at a time (with sources!), then we can start looking around for other areas where we can learn, or participate.
Don't expect to know everything from the beginning, or you will feel overwhelmed. Just take it one step at a time, one profile at a time — and NEVER be afraid to come here to G2G and ask questions, or ask for help. That's what we're here for.