http://www.spartacus.schoolnet.co.uk/2WW.htm
Here is a great site that gives info on…oh the basics 
Background to the War
Chronology of the War
Political Leaders
European Diplomacy
Major Offensives
Air War
Countries
Sea War
The Armed Forces
Scientists & Inventors
Military Leaders
French Resistance
USA Military Leaders
The Resistance
British Military Leaders
Resistance in Nazi Germany
German Military Leaders
Nazi Germany
Japanese Military Leaders
The Holocaust
French Military Leaders
Secret Agents
Russian Military Leaders
Soldiers, Sailors and Pilots
Home Front
Women in the War
War Journalists
War Photographers
War Artists
Weapons and Tactics