I've never had a guitar lesson in my life & I'm playing 2 gigs in the next 2 months.
I just started off with the good old tuition video to learn how to tune the thing & replace strings etc, then started learning Beatles & Oasis chords/tabs from the internet and went from there, tabs help you a lot to get the chord shapes right. They look a bit mental when you first look but it gets easier.
Good luck and have patience
ps
http://www.ultimate-guitar.com is great for looking up songs.