I remember the first time I went to a big gym.
Before this I had been going to this tiny little thing in my apartment complex with about two machines and a few light weights so when I went to this megalithic monster of a professional gym I was like he hick in the big city! I did not know what muscle growth workouts I should do there were so many options! Luckily a few guys took me under their wing and showed me the ropes (literally in some cases!) but I was still left befuddled until I found out that the exact exercise sets were not as important as HOW I did them Once I realized this I set about simply picking a set of exercises that I felt covered all of my body (not just the biceps, I swear there was a guy there that just did curls for 2 hours a night then went home!) then applied what I had learned on how to do muscle growth workouts.
These are the rules I followed:

• Do an all body workout.
  Do not focus on just one muscle group.
  
• Have a plan.
  Write down your exercises, how long it takes, how long you rest how much you lift how many reps ...
  everything.
  You only know you are getting stronger when you see those numbers going up.
  
• Lift heavy not light.
  You are training for strength and in turn you will get bigger muscles.
  Lifting light dos not stress or challenge your muscles so is useless.
  
• Only work each muscle group until you have stressed it to 100%.
  This usually meant I would do some warm up sets then my last one would be just 10 reps at maximum weight.
  So heavy an 11th rep would be impossible.
  
• Do not over-train.
  Resting is when our body heals and grows muscles, intense workouts should be followed by enough time to rest and get skinny to muscled growth