Jimmy Atkinson, of the OEDb: Online Education Database has compiled a very useful directory of authoritative Web resources. The article is entitled, Research Beyond Google: 119 Authoritative, Invisible, and Comprehensive Resources.
I like this line:
Do you think your local or university librarian uses Google? Sure, but certainly not exclusively. [Oh no, our secret is out] In order to start researching like a librarian, you’ll need to explore more authoritative resources, many of which are invisible. [What do you mean “invisible”?]
Topics Covered include:
Deep Web Search Engines | Art | Books Online | Business | Consumer | Economic and Job Data | Finance and Investing | General Research | Government Data | International | Law and Politics | Library of Congress | Medical and Health | Science | Transportation