You need to start with your MINDSET.

It all starts there... Without a REAL BURNING DESIRE TO GROW and become an exceptional guitar player, it won't happen.

Absorb everything you can about guitar playing
Study EVERY resource you find about guitar playing
Practice ALL THE TIME (even when you're not holding a guitar)
Learn the difference between PLAYING GUITAR and PRACTICING GUITAR
Talk to everyone you know about guitar playing
Find other guitar players
SEARCH FOR MORE GUITAR PLAYING RESOURCES (not just this website)
The more you know, the faster you willl grow
Write songs EVERY DAY (even if you thik you can't)
Don't think you can't, KNOW YOU CAN. (everyone else can do it too)

You can find lots of additional free resources at my website if you want.

EDIT: Oh yeah, .... GET A GUITAR TEACHER. That's STEP 1. No matter WHAT you do, you need a teacher. They will help you faaaaaar more than any resource online... A good teacher will also help you find more free resources online. :) AND he'll help you understand those resources much easier and faster and better than if you were on your own.