Caloric deficit is the only way to lose fat. One can create a deficit by routine monitoring what one intakes and eating less more than one burns fat. Undoubtedly, extra exercise helps to create that deficit.
I recommend the bench press for growing mass in the upper body i.e. the chest part which is fairly an easy movement to learn and teach. To be the most popular movement of all time, seemingly as no one cares about how much you squat or deadlift, this is all about how much you bench!