The Law Library of the Library of Congress provides materials, guides, and resources for finding information about state, federal, and international law. It also provides The Guide to Law Online, which is a helpful annotated guide to sources and methods for researching the law, and a very useful Researching Federal Statues guide.
Because the University of Southern Indiana serves a tri-state region including Indiana, Illinois, and Kentucky, we've included links to those state legislative resources here. In order to find the official state government sites for other US states and territories, go to the State Governments listing at USA.gov. Select the state you're interested in from the drop-down menu on that page, and then click on the state's name in the Official Name box to go to the state's official government website. Additional resources for state law can be found via The National Conference of State Legislatures. You may also find a tidy guide to state law and state legislative sites at Justia.