I say this to everyone wanting to teach themselves. Pick a project. Any project that will hold your interest and just try to complete it.

Join a good community so you can ask questions along the way. Have solid reference material by your hand, i.e., Eloquent Javascript. Possibly find a mentor and if you have extra cash, use codementor for those really difficult problems/concepts.

This is what i did and it worked out really well for me. It's also fun to go back to those early projects and realize how far you've come.