The web is full of information on EU history; here are just a few pages that are quite good.

General EU history sites

Here are some timelines to add to the Chronology in Chapter 1 (they help organise studying for exams).
www.let.leidenuniv.nl

The ParlEuNet Virtual Library contains a comprehensive library of information about Europe for students; here is an entry point for history pages.

Leiden University, History Dept
Many pages with source documents
www.let.leidenuniv.nl/history

Many excellent pages on EU history on Leiden University’s History of European Integration Site
www.let.leidenuniv.nl/history

Early post-war period

Pages with photos and videos showing hard times in Europe
www.dhm.de
www.trumanlibrary.org
www.usafe.af.mil

Historical bases of European integration

The OECD in more detail
http://www.oecd.org/document

The first treaties
www.europarl.eu.int/factsheets

Developments up to the Single European Act
www.europarl.eu.int/factsheets

The Maastricht and Amsterdam Treaties: prospects for the European Union
www.europarl.eu.int/factsheets

The Single Market Programme & EEA
europa.eu.int/comm/internal_market
europa.eu.int/comm/external_relations

Communism’s creeping failure and spectacular collapse
www.zum.de
www.historywiz.com