Interesting video on how to get better at vim:
Vimgolf looks like an interesting site, but they don’t want to show you their best answers unless you provide them with a solution of your own.
http://vimgolf.com/challenges/55b18bbea9c2c30d04000001
Also, breaking bad habits, which I have plenty of:
http://vimcasts.org/blog/2013/02/habit-breaking-habit-making/