The one thing I would suggest you do is respect the Korean culture while here. If you respect them they will respect you.
I came to Korea to teach English, but I have never taught in my life before. You will find out that everyone who comes to Korea is escaping some sort of time in their life, as I was as well. All I needed was a degree; medical clearance and police clearance (make sure you have an apostles!) and they pay for flight here and back home; they pay for your accommodation and all you have to pay is power, gas and water. Safety is not a problem compared to South Africa on all accounts!
It was an escape that turned into one of the best decisions in my life! The independence I have in Korea is one of excitement and responsibility. I have the nights to myself and the weekends to do what I like. For the most part it’s getting out of my apartment and party with my friends. I have also been able to travel to Thailand and Japan, which was definitely one of the best times of my life!