The English Civil War lasted from 1642 until 1651 and was a series of three armed conflicts between the Royalists, called Cavaliers, and the Parliamentarians, called Roundheads. A few of many consequences of the wars were the executions of King Charles I and his son, Charles II and the establishment of the Protestant Ascendency, which opposed the Church of England, in Ireland.
Regular Websites
British Civil Wars, Commonwealth and Protectorate
Offers time lines and an account of the British Civil Wars, biographical profiles of those who were instrumental in the fighting, and a military history of the era. - British Civil Wars, Commonwealth and Protectorate
http://www.british-civil-wars.co.uk/
Contains sections about the war including religion and the Scottish question, Oliver Cromwell, and the Restoration, as well as a list of supplemental readings, books, and articles. - English Civil War
http://boisestate.edu/courses/westciv/english/
History Guide: The English Civil War
This is a lecture within a series of lectures on early modern European history, and it focuses on the English Civil War, including its causes, the political situation leading up to it, and the war itself. - History Guide: The English Civil War
http://www.historyguide.org/earlymod/lecture7c.html
History on the Net: The English Civil War
Presents a comprehensive explanation of the Civil War, including the weapons used to fight it, the differences between Royalists and Parliamentarians, the various battles, and Oliver Cromwell. - History on the Net: The English Civil War
http://www.historyonthenet.com/Civil_War/civilwarmain.htm
The Causes of the English Civil War
Delves into the long-term as well as short-term causes and effects of the English Civil War in simple terms. - The Causes of the English Civil War
http://www.historylearningsite.co.uk/english_civil-war.htm