edX Courses
Courses are designed to be interesting, fun and rigorous. They are the best courses, from the best professors and the best schools, spanning dozens of subjects. Some edX courses now offer ID verified Certificates of Achievement. A new way to demonstrate your achievement and showcase your knowledge.

bandannie : I highly recommend you check out these courses. I am taking the one about Alexander the Great and it is fascinating.

edX is a massive open online course (MOOC) platform founded by the Massachusetts Institute of Technology and Harvard University in May 2012 to host online university-level courses in a wide range of disciplines to a worldwide audience at no charge and to conduct research into learning. EdX has nearly 1.6 million users. The two institutions have each contributed $30 million of resources to the nonprofit project. The prototype course, Circuits and Electronics, began in December 2011, through MITx, the massive open online program at MIT.[3] There are currently 29 schools that offer or plan to offer courses on the edX website.[4] (wikipedia)