Hefty course fees may pose a barrier to a degree or other university qualification, but they are no longer a barrier to learning from some of the world’s leading educators. The number of online courses has surged. Stanford, MIT and Berkeley are just a few of the universities that have made lectures and courses available online. A visit to Open Culture brings ups hundreds of free courses in the arts and liberal sciences that range from languages and literature to engineering and physics. So whatever it was you wanted to study; be it string theory, a new language, psychology or global politics…now you can–for free.