(we know that the thing that we use to record balls and strikes is called an indicator, not a clicker, right?)
The NJSBUA, one of the umpire associations that I belong to, is probably the biggest in the state of NJ. All of the umps that do varsity baseball and softball, at least in the northern part of the state, are members. The publish a newsletter called the Indicator. It has some good information for high school umps. Enjoy and thanks to Joe Marateo.