As a registered Den Leader, Assistant Den Leader, Committee Member, Cubmaster or Assistant Cubmaster, you are expected to complete a 3-hour long position specific training course. They are usually offered in person each fall, by councils or self paced on line at any time. Visit gtcbsa.org to find offerings by the local council. Visit my.scouting.org for the online version.
Click here for the HowTo guide to take position specific training online.