AcademicEarth.org offers more than 1,500 video lectures by professors from Harvard, Yale, and other top schools, broken down into “single classes on topics as diverse as art, architecture, and astronomy.”
iTunes U proves that iTunes “is good for more than downloading music.” The site features more than 350,000 video lectures, including a virtual class on the Galápagos Islands and a journalism course from the Poynter Institute.
KhanAcademy.org provides a “refresher on finance basics,” as well as tools for helping your kids learn geometry. The 21,000-plus videos are shown on a neon blackboard that lets you learn at your own pace.
HowCast.com is divided into categories like environment, first aid, and parenting. Experts share their knowledge in videos that cover everything from surviving heart attacks to playing charades.