Such research may be accomplished by using governmental, congressional, or commercial services. govinfo.gov https://govinfo.gov
The Government Publishing Office launched govinfo.gov as a beta website in February 2016. It is still a work in progress and will eventually replace GPO's Federal Digital System (FDsys). GovTrack http://www.govtrack.us
GovTrack is a free service that can help determine the status of U.S. federal legislation, voting records for the Senate and the House of Representatives, information on Members of Congress, congressional district maps, and the status of legislation. HeinOnline is available only to subscribers. CRS Resources

		Classes at CRS

Introduction to Legislative Research
This two-and-a-half-hour seminar, offered six times a year by the Law Library of Congress and CRS, is designed for those with no legal research experience. Selected CRS Reports

Additional information on researching legislation and regulations is provided in the following CRS reports.
This report is designed to introduce congressional staff to selected governmental and nongovernmental sources that are useful in tracking and obtaining information on federal legislation and regulations. It includes governmental sources, such as Congress.gov, the Government Publishing Office's Federal Digital System (FDsys), and U.S. Senate and House websites. Nongovernmental or commercial sources include resources such as HeinOnline and the Congressional Quarterly (CQ) websites. The report also highlights classes offered by the Congressional Research Service (CRS) and the Law Library of Congress.
This report will be updated as new information is available.