club fitting certification

i'm interested in becoming a Titleist Certified Club fitter can anyone assist me on how to get started?

I thought one needed to be a PGA Pro and/or Run a Pro Shop on a course to do this...?

You do need to work for a Titleist Retailer. There is a lot of on-line training available to the staff of Titleist retailers. As I have said in the past, it makes a lot of sense for you to also be a PRA Professional or Apprentice. It is very difficult to properly fir clubs without a knowledge of the golf swing.