European Sources Online based at the University of Cardiff EDC is available at http://www.europeansources.info/search.jsp
Key features are the information guides to EU institutions, policies and nations. It also indexes newspaper and journals articles relating to Europe related affairs and official EU publications so can easily be used for literature searching.
The General Secretariat of the Council of the EU Library blog is a great place for staying up to date with the latest European related news, events and publications. They produce a monthly think tank review which summarises the latest books and articles from leading European social, political and economic policy think tanks.