Washington State University
Washington State University: Literary Movements: Puritanism in New England
Good overview of the beliefs, theology, church membership, and literary style of the Puritans. Contains a good bibliography for more resources.
Bill Carson
Puritan Sermons: Cotton Mather's "Satisfaction in God"
Site provides the full text of Cotton Mather's work "Satisfaction in God." Includes a selection of links below the text to more Puritans sermons and beliefs.