The Code of Federal Regulations (CFR) is a public record of all permanent rules and regulations published by the executive departments and federal agencies of the U.S. government.
The code is broken up into 50 titles that cover a broad range of topics subject to federal regulation.
Title 13 of the CFR deals with business credit and assistance and governs the SBA.
Part 125 of Title 13 covers contracting opportunities for small businesses.
We recommend you skim through this section and familiarize yourself with the contracting process if you're interested in doing business with the government. You can find the full text of Title 13, Part 125 here.