free worldwide online course material links (the materials are free, not the courses) at University of Texas.
http://web.austin.utexas.edu/wlh/browse.cfm
from the FAQ:
"Can I take courses posted on WLH for free?
Courses on WLH are offered for credit only through their accredited universities, distance learning programs, or online degrees programs; their link to WLH is strictly as free courseware. It doesn't cost anything to browse WLH or link to any of the sites posted on WLH, but WLH provides a free service for reference and not credit. If interested in cost, enrollment or credit concerning a course, contact the administrator or professor of the particular course site, or visit WLH's useful links page for more information about online courses. "