Administrative law consists of two things:
1) the regulations created by governmental agencies, like the IRS or EPA, implementing statutes passed by Congress or a state legislature and
2) administrative rulings, or decisions, by agencies interpreting and applying their regulations. Rulings are similar to court cases and sometimes end up in the court system.
Federal regulations are first posted in the Federal Register, in the order in which they're passed. Later, they're gathered together into the Code of Federal Regulations (CFR) where they're organized into subject areas called "titles" that may cover several volumes. Titles are usually equivalent to an agency--Title 26 of the CFR holds the IRS regulations and consists of more than 12 separate volumes.
