I was going to subscribe to Chad's videos on the Coursesaver website because I liked them a lot when I was taking my chem and physics classes but they skip and buffer and will not play on my computer. I just got a new Chromebook 2 weeks ago so I don't think that is the problem. The Khan Academy videos are pretty good and I tried a few other free sample videos that were decent but pricey for subscriptions. Does anyone have a favorite that they swear by? There seem to be new ones popping up all the time now. I'm willing to pay for a subscription as long as both the content and the video quality are good.