How to Build Massive Upper Back Fast

Program is actually pretty simple but it works great for both newbies and advanced trainees.
Do 10 sets of wide grip pull ups doing 50% of your rep max in each set, with 1 minute rest between sets. 
Eventually try to add reps whenever possible- progressive overload is crucial for fast muscle gains. 

Train 3 times per week with 48 hours rest between workouts. As time goes by and your recovery ability will increase you can start doing that program 4 or 5 times per week .