Oh, wow, can you please give me details? Was it from family or friends, or a girlfriend?
Your best start to find an Adams gas stocist near to you, to take out a bottle is the most expensive part of the project. And then, as above you'll need a regulator, beer and gas lines, and taps, maybe a kegerator, kegwasher and so on.
I know you feel intimidated, but once you're in it's easy.