Offseason Study Resources

[NDSD]

This past fall was my first as a h.s. football official. I had a great time and look forward to many more to come.

I'd like to continue fine-tuning my knowledge of the rules in the offseason. I've been going through the NFHS rulebook & case book.

I was wondering if anyone had a copy of the 2003 Edition of the Referee Study Guide for Federation. Honig's is sold out, and I haven't been able to come across a copy anywhere else online.

What are some other good study aids for Fed rules, beyond just the rule & case books?

Thanks in advance for your help.