Here's an update to our original 2011 post: The social theorist and geographer David Harvey has produced a free online course where he gives a close reading of Karl Marx's Capital (1867). Often considered to be Marx's masterpiece, Capital is where he elaborated a critique of capitalism and laid the groundwork for an ideology that took the 20th century by storm. Harvey has taught courses on Capital for over 40 years, both in universities (Johns Hopkins and CUNY) and in the community as well. Now his 26 lecture course is freely available on the web. You can watch the first lecture above. (It's preceded by an introductory, six-minute interview.) The rest of the lectures can be accessed via Harvey's web site, YouTube, iTunes, and the Economics section of our collection of Free Online Courses.
Marking a new phase of the project, Professor Harvey is now looking for volunteers to help translate his lectures into 36 languages. If you speak English and languages like Urdu, Arabic or Italian (just to list a few), you can start helping with translations here.
Also note that Harvey published A Companion to Marx's Capital in 2010. It's something you'll want read along with the lectures.