lectures in English

A College Education for Free:
OpenCourseWare
In April 2001 the Massachusetts Institute of Technology proposed something unheard of in the pages of the New York Times. They said that they would begin putting their entire course catalog — some 2,000 courses — online, for free, over the course of an ambitious ten year initiative at the cost of up to $100 million. The following year, in October 2002, the first fifty courses went up on their OpenCourseWare site. Nearly 7 years later, MIT is nearing its goal, with about 1,900 free courses available through the OpenCourseWare program, and materials now routinely posted on other social media sites, including YouTube , Flickr , and iTunes U.
http://ocw.mit.edu/OcwWeb/web/home/home/index.htm