Pursuing b.com i hvnt opted fr ca or cs alongside it i wanted to know of other crses diplomas i cn do to give me an edge over the bms kids

You can opt for International CFA or CPA. Again these are well-reputed high-end courses. Do your thorough search and gauge your skills before moving into it. Eventually it is your skill and knowledge that will give you an edge over others. Try to find out what excites you the most rather than doing