Welcome, Jackie! Yes, if can be a little overwhelming at first. Start slow, take your time entering your info, and use the help pages lots!
Jackie, you’ve found a really wonderful community, many of them well versed on WikiTree Policy and Style to help you get things right. And you’ll also be amazed at the skills folks here have in digging up the most obscure information about people in our One Tree.
My best advice: ask, ask, ask. No dumb questions here.
I hope you have as pleasant experience with WikiTree as I have. Happy hunting!