The WRL has a robust reference collection of genealogical research materials at their Williamsburg location, some of which are also located and accessible in Swem library. They have city directories, information related to the history of James City and York Counties, indexes to passenger arrival lists, notebooks of newspaper clippings related to residents, and database access to both Ancestry and Heritage Quest. They also have the Virginia Gazette on microfilm from 1930-present, and their index to obituaries in the Virginia Gazette can be found online here. They occasionally hold classes to teach beginners on the basics of genealogy (a list of upcoming classes and workshops can be found here). They also have a guide for their genealogical resources that can be found here.
If you are a cardholder of the Williamsburg Regional Library, you can also request books and microfilms from the Library of Virginia.
The Williamsburg location of the WRL is located at: 515 Scotland St, Williamsburg, VA 23185. You can find out more information about the library by visiting their website.