Exam

Hi. I used to play competitive fastball back in my younger days. Now that my kids are old enough, I want to get active again. I want to give back to the sport, but I have been gone for so long. What if everything has changed? Is the rulebook 10x larger than it was when I played? How hard is the exam. I don't want to stress out over the exam. Do I get to study? Is it open book?The exam is what worries me the most.Cindy