I have never taken a class from Jan but would in a heartbeat if I could. I found this document about the class and supplies needed. Read it carefully until you understand it as best you can. If the class is being given in a quilt shop, they will help you pick out fabrics. Do NOT let the list and info overwhelm you. Just breathe and enjoy the class and don't worry if you don't get through with the project that day. Just make sure you understand the technique.
http://www.jankrentz.com/workshops-supply.php?ID=32
Thought you might like some eye candy. Not all of these are starburst but I think this will give you some ideas about color and pattern combinations. If I lived in SC, I would think about taking this class with you.
https://www.google.com/search?q=jan+...w=1176&bih=650