From: http://www.gcflearnfree.org/topics/office/

Excel Word Lessons Powerpoint

The Microsoft Office suite is an essential collection of desktop applications that includes 
Word for documents, Excel for spreadsheets, PowerPoint for presentations, Access for databases, 
and much more. Choose your version of Microsoft Office to begin learning today!

From: http://www.forbes.com/sites/michaelnoer/2012/11/02/one-man-one-computer-10-million-students-how-khan-academy-is-reinventing-education/

  Khan Academy
  

From: https://www.khanacademy.org/

  Learn the fundamentals of programming with the popular JavaScript language and ProcessingJS library. 
  Write your own programs and share them, explore programs made by others, and learn from each other's programs!
  

From: http://ocw.mit.edu/index.htm

  “The idea is simple: to publish all of our course materials online and make them widely 
  available to everyone.”
  Dick K.P. Yue, Professor, MIT School of Engineering    
  

From: https://www.edx.org/?utm_source=rubicon&utm_medium=adunits&utm_term=June2013&utm_content=160x600&utm_campaign=edX

  REAL CLASSES From Science to Art to Technology, edX offers simply the best classes from the best professors and universities.