Hey man, don't get discouraged. I would definitely return that lighting kit, but I can see how it looked like an attractive offer at that price. We've all started where you were and some good ol' perseverance will get you to that pro level you want to be at!
Like starkyrulz said, don't try to do too much at once. Portrait photography is tricky. Make sure you master all of the controls of your camera and are 100% comfortable shooting in manual before you try out portrait photography. Once you master composition and your camera then you're ready to get a flash and try out some portrait stuff.