Don't Let Your Education End at Graduation - LINDSAY GELLMAN, Wall Street Journal

Then there are online courses, which come in many flavors. iTunes U offers free educational content, including lectures, from colleges and universities. Khan Academy (Khanacademy.org), a nonprofit, is a free platform for original tutorial videos and assessments, and users earn virtual badges for mastering a given subject. Codecademy (Codecademy.com) offers free, hands-on online programming courses and exercises. Coursera (Coursera.org), a for-profit online educator, partners with colleges, universities and other institutions to offer courses that are free to take, but there is typically associated course work—graded via machine or by peers—and there might be a charge for an optional course-end certificate. Know your industry—and know when you need to have a skill officially certified, or when informal learning might be sufficient or even preferable. http://online.wsj.com/articles/dont-let-your-education-end-at-graduation-1408234349