ERIC (Education Resources Information Center) is the leading online library for education research and information. Sponsored by the U.S. Department of Education, ERIC covers all aspects of education, from early childhood to post-secondary education.
Academic Search Complete is a database of academic journals, magazines, and other scholarly resources, covering a wide range of subjects across the humanities, sciences, and social sciences. It's a great starting point for research, especially with its inclusion of many open access publications.
Abstracts and full-text of scholarly journal articles, book chapters, books, and dissertations, devoted to peer-reviewed literature in behavioral science and mental health
SocINDEX is the most comprehensive database for sociological research. It provides access to scholarly articles, books, and conference papers in sociology and other related fields.