Personally, the best mentor I had was my first manager at my first job. He did really well for himself now and probably could retire (he's in his mid 30's).
But how I found mentors naturally was hang out at a place called Hacker Dojo here in Silicon Valley. Since they often had free JavaScript classes and meetups, I took advantage of that to make connections and eventually found mentors/friends and people in general that help you out.
