
The BSA Cub Scout Leader Book is the official guide for Cub Scout packs on how to run a Cub Scout program. It describes in detail the role of each leader in the pack, what his or her duties and responsibilities are, and how each part of a Cub Scout pack should function.
Every Cub Scout leader should either own a copy or have one that can be easily borrowed.
You can order the current (2007) edition ($8.99 plus shipping, loose leaf) at the link below.