Earlier, it taught basic html, now I am rewriting the Tasks app, http://github.com/thewhitetulip/Tasks/, to use the front end framework http://vuejs.org, using the learning of my experiment, I'm putting together anther series of tutorials, http://github.com/thewhitetulip/intro-to-vuejs.
Thid is because I wanted an easy to understand tutorial which doesn't expect the user to have anything more than basic html/css/js knowledge.
edit: links