Introduction: I am a left-handed guitar instructor. This is very important to a person learning the guitar for one simple reason -- you see exactly how you are supposed to play a guitar chord or the positioning of your fingers.
I've had students who have gotten lessons from guys who are far more advanced than I am, but when they are taught by a left-handed person, they have all said this one thing: "I see exactly what I'm supposed to play."
Ideally, this makes learning much easier and faster. Most of all, if you don't learn, I don't get paid; it's that simple.