http://www.eric.ed.gov/ - ERIC, Education Resources Information Center - is an online digital library of education research and information.
http://www.editlib.org/ - The vision for EdITLib is to facilitate learning, discovery and innovation by connecting scholarly research on Educational Technology/E-Learning with learning opportunities.
http://www.intute.ac.uk/ - Intute is a free online service that helps you to find web resources for your studies and research.
http://www.questia.com/Index.jsp - Questia is the revolutionary online library offering the full text and images of scholarly books and journals focused in the humanities and social sciences, plus magazine and newspaper articles.
