I was lucky enough to be mentored by one of the big names in the game . . .
Suprisingly enough I learned most everything I do now, on my own.
Don't get me wrong. My mentor pointed me in the right direction. Mentors really provide an example of how to deal with sucess. They're more of a role model. They provide inspiration. If you need answers to certain questions, mentors are not the way to go. Mentoring is like a love relationship, you don't want to drive it into the ground.
So what did I do? First I'd get the Series 7 test books. Study for the test.
If you want to be good at trading, make it a full-time job. Find a shop willing to sponsor you for the test.
Second make sure you know Excel backwards and forwards. I personally know more traders that program and are sucessful than guys who don't and are winners. Find a language you feel comfortable with. If you can't program, or can't take a class or two at a JC, don't have time whateva, no big deal. You may be able to make it up.
Third, start buying all the books on trading that you can. Start with Jack Schwager or pick up When Genius Failed or Liar's Poker. Then get into the more technical stuff.
A lot of trading has to do with your mindset and approach. Fourth I'd develop a step by step strategy you'd like to trade. Take something you thought of on your own or something you read. Find the broker, set up your computer and everything weeks ahead.
After that you should be ready to go.