Google
Scholar – Provides a simple
way to broadly search for scholarly literature. From one place, you can
search across many disciplines and sources: articles, theses, books,
abstracts and court opinions, from academic publishers, professional
societies, online repositories, universities and other web sites.
OpenCourseWare
Consortium – This site provides a
portal to search through hundreds of free courses or to add new courses
you know about to the database.
iBerry– Check
out this site for a huge directory of open courseware organized by
school and subject matter that can point you in the right direction for
any type of learning.