I want to start a Galaxy S III GT-i9300 & SHW-M440S(Also known as Galaxy S III 3G in Republic of Korea) port, but I'm complete beginner. So I don't know what should I do for this port.

I have Galaxy S III 3G SHW-M440S. It is a Korean Variant of GT-i9300 but Hardware Specification is perfectly same. Anyone have GT-i9300?