Hello, I Need To All The Precautions, Exercises As Well

Hello, I need to all the precautions, exercises as well as the diet plan post angioplasty for my brother. He is 31 years old. Height: 5'8", Weight around 90-95 kg. He underwent angioplasty on September 9, 2015. He had one of the veins (arteries? sorry, with no science/medical background I have little knowledge about it). One stent was placed in the vein/artery. Before operation, he used to chew tobacco (Khaini) all the time and also used to eat oily and cheese foods from local eateries and hotels. He also used to take a lot of sugar in his tea but not in other food. His salt intake was normal. His diabetes was detected as 170 on the day of operation. Please note that he did not had his morning tea that day when he suffered pain and later had operation on the same day. He had high BP on the day of operation but is normal now (67:107). He has no history of heart disease, BP or diabetes prior to the operation.
He has been discharged today (September 11, 2015).