So, "Looks like there's a ton of knowledge out there" do you recognize the line? Guess What? It is actually truth!!! Check it out!! There's a huge list of online free sites to educate yourself. No need for attending classes, just a strong will power and the time to make it!
MIT OpenCourseWare – MIT OpenCourseWare is a free web-based publication of MIT course materials that reflects almost all the undergraduate and graduate subjects taught at MIT.
Tufts OpenCourseWare – Tufts OpenCourseWare is part of a new educational movement initiated by MIT that provides free access to course content for everyone online. Tufts’ course offerings demonstrate the University’s strength in the life sciences in addition to its multidisciplinary approach, international perspective and underlying ethic of service to its local, national and international communities.
HowStuffWorks Science – More scientific lessons and explanations than you could sort through in an entire year.
MIT Sloan School of Management – MIT Sloan is a world-class business school long renowned for thought leadership and the ability to successfully partner theory and practice. This is a subsection of the larger MIT OpenCourseWare site.
U.S. Small Business Administration Training Network – The Small Business Administration has one of the best selections of business courses on the web. Topics include everything from starting a business and business management to government contracting and international trade. Most courses take only 30 minutes to complete.
Notre Dame OpenCourseWare – Notre Dame OCW is a free and open educational resource for faculty, students, and self-learners throughout the world.
Bio’s Best – Biography.com’s most popular biographies on notable historical figures.
Duke Law Center for the Public Domain – Duke University is counted amongst the best schools in the South. If you’re interested in law, Duke’s open courseware in that subject area can go a long way towards helping you learn more about the justice system.
Intute Law – Provides free access to high quality resources on the Internet. Each resource has been evaluated and categorised by subject specialists based at UK universities.
Boston College Front Row (Law) – Boston College Front Row is a Web site that offers free access through streaming media to tapes of cultural and scholarly events at Boston College.
VideoLectures.NET (Computer Science) – A free and open access educational video lectures repository. The lectures are given by distinguished scholars and scientists at the most important and prominent events like conferences, summer schools, workshops and science promotional events from many fields of Science.
Wikiversity School of Computer Science and Technology – Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning.