just kidding
what is going to make the difference is how much time you put in. if you can put in an hour a day youll gain skill quickly. the biggest problem youll run into is where do i go from here. after you learn the beginner stuff but still havent advanced enough to understand the intermideate stuff. youll find a skill wall where most people (even me) start to fail and get frustrated. here on this site tons of people will help you out to get through this, but it all depends on how much you work at it. and like i said in my first post makeing up little song for your grandkids (if they are young) might help alot in the motivation department. they dont even have to be that good. just a few chords and as you learn maybe some lead lines to help you practice what your learning.
and keep at it soon there will be word of a new kick ass 68 yearold guitar player.
They say the END is near, but I'm Tired of waiting.