I live in Nashville! The Music City Modern Quilter's Guild just started up--I joined but haven't been to their meetings yet. That may be a place to start. Also there is a Bernina shop in Cool Springs (Bernina Sewing Machine Station, I believe) where you can get your machine repaired or serviced. I think they had classroom space. That's about half an hour drive from where I live in Nashville, but you just shoot straight down I-65 and it's not hard to find. :-)
http://www.sewingmachinestation.com/