Does anyone here do glblowing? Any tips for a complete novice?

I will be taking a 2-hour intro to glblowing cl this weekend and would appreciate any tips or advice. I've never done this, but visited the Fenton Art Gl plant in WV this summer and been completely fascinated since. It was a joy to watch those craftsmen and I just have to try it. I sure would appreciate any advice you might be able to provide. Thanks!