Excellent 50 minute webinar from GPO.
Provides as overview of the principles of scholarly citation and focuses on specific problems and peculiarities involved in citing Government documents.
Most U.S. government creative works such as writing or images are copyright-free. But not everything is. Check this site to learn more about items that might be under copyright from the U.S. Government.
The Freedom of Information Act (FOIA) is a law that gives you the right to access information from the federal government. It is often described as the law that keeps citizens in the know about their government.