Finding CaseLaw 

Google Scholar 

 Provides both a free case law search (50 states + Fed) under "Case law" and law review articles under "Articles".   

Legal Information Institute  

Cornell University Law School project that provides free statutes, cases and regulations.  

FindLaw 

Provides free provide case and statute search. 

Finding Statutes, Government Documents and Legislative History

Congress.Gov 

Includes legislative activity, roll call votes, calendars, schedules, committees, the Congressional Record, and status information on treaties. 

FDSys 

FDSys provides free online access to official publications from all three branches of the federal government. 

Minnesota- The Office of the Revisor of Statutes 

Provides both up-to-date Minnesota Statutes and legislative history material.  

Finding Secondary Sources

ABA Free Full-Text Online Law Review/Journal Search 

Free search engine searches the free full-text of over 400 online law reviews and law journals, as well as document repositories hosting academic papers and related publications such as Congressional Research Service reports 

SSRN 

Social Science Research Network (SSRN) is an open access collection of social science research working papers, accepted papers, published papers, and conference papers.  In many cases, the papers can be downloaded as PDFs.