The Tudors - A clear, engaging, and interactive BBC site that offers a nice introduction to the Protestant Reformation in England. It provides information on Henry VIII, who triggered the English Reformation and subsequent split with Rome, the Reformation in Scotland, background information of the Reformation, related website links, and special galleries devoted to English cathedrals.
Reformation Europe - A website hosted and maintained by Fordham University that offers online information for various periods of world history. The link here is to the website's section on the European Reformation.
The Early Modern World - A website hosted and maintained by Fordham University that offers online information for many periods of world history. The link here is to the website's section on the European Age of Discovery.