Hello yahya;
welcome to HealthcareMagic
The preferred diet for building muscles in meat;chicken;eggs and all high protein products .For the height of 5'11" the ideal weight is between 65-82 kgs so at 106 you are
overweight.It is good that you are going to gym so while doing exercises please consult a fitness trainer at your gym and ask him;he will guide you with the exercises needed to improve your bicep.It is better to exercise under guidance of a trainer so that he will guide you with proper exercise to reduce weight and shape your body.
Thanks