This will allow you lots of free gym time, and you'll even be getting paid to talk weights and training with others. Everyone has a different metabolism and will require slightly different supplementary nutrition for building muscle. It's a good idea to meet at least once with a nutritionist or other health counselor to build a diet plan specifically tailored to your body and what you want to do with it.
How successful you become will depend on how dedicated and driven you are in attaining your goals. Consider consulting a dietician and personal trainer to get started. Protein helps to build muscle quickly, and you need to have it present in high quantities in your diet, if you want to become a bodybuilder.
Keeping the arms locked throughout the entire movement is critical. When you reach the top of the repetition we want to see that the arms are pointed directly to the ceiling, the biceps are close the the ears, and there is a straight line from KB to shoulder, to hip.