The off season is a great time to read the rule book! Take one rule a month and study it, really study it. You will learn 2 things very quickly:

1. How much of the rule you really didn't understand

2. Parts of the rule that you "never" saw before. 

Everytime I study the rule book, I am amazed at the little things that come up that I had not thought of before. As a referee, I need to know all the ins and outs of the rule, but I also am aware that each position on my crew is the "expert" on certain rules and mechanics.

Referee -Rules 2 & 9

BJ - Rules 6 & 8

LJ - Rules 3 & 4

LM - Rules 5 & 7

U - Rules 1 and 10

YOU be the expert, know the rules and mechanics better than ANYBODY in the stadium.

One resource that I use a lot is Reddings Study Guide. It's only about $20 and it has about every situation that could occur and great easy to understand explanations. Check it out:  http://www.penaltycard.com/brands/The-Redding-Study-Guide.html