If your not prepared to be at this for a long time with minimal gains all the while that you barely notice then look into something else.

How do you get bigger? Train HARD, eat LOTS and rest. Its as basic as that. How long it takes all depends on how well nailed you get those things consistently. If there was a secret it would have been sold and there would be lots of people walking around stage ready. Those that are in great shape have done it over the course of time.