You should always focus on lifting more weight over time, that will cause more tear, more repair and more bulk. You should work at least two muscle groups at once, and make sure you aren’t lifting to little or to much. If you can do 5 reps of any workout that is fine, don’t over stress yourself. Fuel your body before and after the gym, Protein is the main source of energy, it repairs the torn muscle so it is a must when it comes to bodybuilding. Keep your energy and enough amount to pull of intense exercises and lifting. Never go more than two weeks without a change, always go for at least three days a week and you only need 45 minutes of workout in the gym. The video below will give some tips for bodybuilding and how you should begin!