On Line Cub Leader's Guide:  (A great Tool for Den Leaders)
http://www.geocities.com/~pack215/home.html

Leader Training:

Fast Start Training (On Line):  required for all leaders 
http://www.scouting.org/cubscouts/faststart/

Youth Protection Training (On Line): good for all leaders to take 
http://www.keystonebsa.org/council/council_training.htm

Keystone Council Sponsored Training Schedule

Keystone Council Home Page