The 50 Brand New Tips for Dynamics GP in 50 Minutes presentation from the GPUG Summit is up now on the main page of DynamicAccounting.net.
GPUG 50 Brand New Tips for Dynamics GP
Microsoft & the GP EcosystemTips & Hidden Features
Archived post from 2010. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.