The Web is filled with great learning resources, ranging from YouTube clips to forum posts to helpful sites, but having to endlessly hunt through Google results doesn’t always lead to a very structured educational experience. Australian start-up site Clivir aims to fill the gap by providing a system for creating structured lessons referencing existing content and your own expertise, and incorporating a social-network-style feedback and comments system. The content is a little sparse right now, but there’s some useful suggestions for new iPhone owners and working with your camera flash, for instance. It would also be a useful way of creating a study group around a particular topic. Clivir is free to use, requires registration.