Internet sources change constantly. Some towns have internet sites. Some schools have internet sites.  More and more government agencies are discovering uses as are businesses, private organizations and individuals.  This list will get you started. Try these and search and see what else you find.  As with any other sources or documentation, be cautious about the historical accuracy, reliability, and degree of objectivity of material on the internet.  A visit to almost any bookstore will yield directories of internet sites.  For example:

Auchter, Dorothy, Todd E. Larson, Scott A. Merriman, and Dennis A. Trinkle. The History Highway: A Guide to Internet Resources. Armonk, NY: M.E. Sharpe, 1997

Clark, Michael. Cultural Treasures of the Internet. Prentice Hall P T R, 1997.

Hahn, Harley. Internet & Web Yellow Pages. New York: Osborne/McGraw-Hill, 1997 [ Caution, some of the sites in this directory are not appropriate for children.]

Pooly, Jean Armour.  The Internet Kids and Family Yellow Pages. New York: Osborne/McGraw Hill. 1997.
 
 

The American Civil War American Memory From the Library of Congress Color Landform Atlas of the United States Connections Education Department Suggested Sites Genealogy Research - Ancestors Genealogy Research Godey's Lady's Book Online The History Channel History/ Social Studies Website for K-12 Teachers Mount Washington National Archives and Records Administration National Geographic Society NativeWeb New Hampshire PBS NHPTV Knowledge Network NHPTV Knowledge Network-Social Studies Resources New Hampshire Division of Records Mangement and Archives New Hampshire Historical Society New Hampshire Public Radio New Hampshire State Government New Hamsphire Information New Hampshire Schools on the Internet New Hampshire State Library NOAA Weather Social Studies School Services State of New Hampshire United States Census Bureau United States Geological Service University of New Hampshire Library Special Collections Web^^
Also, United States history textbooks will help you review the larger themes that were the background for New Hampshire events. For example, see by New Hampshire author:  Kellogg. William 0. American History the Easy Way. 2nd ed. Hauppage, NY: Barren's Educational Series. 1995.