With the constant barrage of new software development technologies, techniques and concepts, I'm looking for a site that would help me in keeping track of new stuff to learn. Say, for example, that I would like to learn Node.js. This site should enable be to keep track of key learning milestones related to Node.js and maybe a list of tutorials, videos, etc that are available online. It doesn't have to have any original content, but more function like a todo list and calendar.

Does such as thing exist?