BBC
Bbc: History Trails: Conquest: William the Conqueror: A Revolutionary
Seven-part biography of William examines the new order brought to England by the Normans.
Online Reference Book for Medieval Studies
Orb: Medieval England: The Conqueror and His Sons
This site contains detailed information about William of Normandy and his sons and the relationship between England and Normandy during their reigns.
Other
Battle of Hastings 1066
This website tells the story of the struggle between Harold the Second of England and Duke William of Normandy.
National Archives (UK)
National Archives Learning Curve: Snapshot: Domesday Book
A history lesson examines the question, "What Can We Learn About the 11th Century" based on the Domesday Book. Background information and teacher notes included.