Statutes -The U.S. Code is official but researchers prefer the U.S. Code Annotated or U.S. Code Service because they contain helpful annotations and are published in a more timely manner.
Legislative Materials - If you’re trying to learn something about a particular piece of legislation, one of the most important documents to look at is the Committee Report. These resources also have the various versions of bills and documents submitted by committee witnesses.
Administrative Agencies - One of the things you will generally not find on the agency web sites are any regulations promulgated by the agency. Those are found in the Code of Federal Regualtions (CFR). You can link to the CFR online through the GPO's Federal Digital System (FDSys). The GPO is the Government Printing Office, the official publisher, so to speak, of the government. As the tagline on FDSys says, "America's Authentic Government Information".
Georgia - Georgia.gov is the official web site for the state of Georgia
The state government, like the federal government, is divided into three branches: