I think UT's preview weekend was last weekend....
From the UT website: Panhellenic Preview will be held during the day on March 8, 2014 at Sorority Village and the UT Visitors Center. Students can check in at Sorority Village between 11 AM - 11:30 AM and the Parent Program will begin on campus at 1 PM.
http://gogreek.utk.edu/join/index.php
I am sure there are other women in your same boat. I would contact Panhellenic and see if they have any tips for sophomores. I would just make sure your grades are awesome and you know some members from each organization. And of course have a rec for every house.