Just the melody. If you are weary from learning and practicing rolls, leaning a melody is a great thing to work on. In fact, Sonny Osbourne has said that is how all banjo players should start out. Almost every measure in this arrangement has options in the lick switcher. So after you've got the melody. You've got a lot of options to add in licks. Check them out one at a time, or shuffle them to completely transform the arrangement.