Of course, you can always ask a Reference librarian for research help. But, when one is not available, you can also find really useful research guides online. My favorite legal research guide resource is LLRX.com . At LLRX.com, you can find guides on specific topics, as well as guides on researching in particular jurisdictions. Use either the links on the left, or use the search for a particular topic.
Ernster, the Virtual Library Cat
Above the Law - A Legal Tabloid - News, Gossip, and Colorful Commentary on Law Firms and the Legal Profession