Tildee is a brilliant concept! Make it easy for people to create tutorials they can share online; in essence, make it easier to teach the things you know to others and make it even easier to learn the things others know! With a simple and elegant interface, Tildee allows anyone to easily create tutorial and other step by step documentation; interestingly, you don't even need to be registered to use the tool! Every tutorial created generates a short and unique URL that is easy to share.
If Instructables is a little too much for you, check out Tildee and start showing what you know today!