Allow me to offer you and all other lefty's out there a different perspective on this.

I am a lefty myself, though I play right handed. I initially studied guitar back in the early 80's. I remember showing up for my first lesson, as there was no online lessons at the time, with a hand me down beat up department store brand student guitar and asked the instructor if I should reverse the strings and play it upside down. He strongly urged against it. Probably for the reasons Jeff has stated, but he really encouraged me to learn it right handed.

I think for a couple of reasons, one mentioned earlier that left handed guitars weren't exactly adorning the walls of the guitar shops back then. They had to be special ordered and also I think it would be difficult for him to teach someone sitting across from him with everything being reversed. I don't know if thats true, but I got to admit even I find it awkward trying to watch a left handed guitar player. Nothing looks right to me when I'm trying to follow what chord shapes they are doing. He also said it really won't be any more difficult learning right handed since I'm starting from the beginning anyway and it turns out he was right. It really wasn't that more of a hindrance as one would think.

Of course, as a kid I played hockey and golf righty and baseball lefty so maybe I'm a bit ambidextrious who knows,

So again this is only perspective and not to be construed as actual advice. Do what feels comfortable, but I really think since your at the beginning of your guitar adventure you might want to consider just trying to learn it right handed. Talk to Christopher or Lisa. They teach the fundamentals so they can better advise you what is the best approach for you as your starting out. Good Luck and have fun no matter how you play it.

Moe