Hi Jill, and welcome to WIkiTree. Thank you for introducing yourself in our g2g forum. I would like to suggest that your next step would be to upgrade to a family membership. They are 100% free. After you upgrade you would be able to add tags, which could be the names and/or locations or your ancestors - one of which could be Sim, since you are interesed in that name. After you have added your tags, you will immediately be connected with other members of WikiTree that are researching those same names and locations that you are.
If you are seeking information on the Sim family, we would need more information for us to help you.
Welcome once again, and I hope you love WikiTree as much as I do.