Can you suggest some courses related to business management and human resource management that can be done after completing B.Com?

You can simply apply for MBA in human resource, but choose for good college for your Masters, like IIMs, IIFT,XLR, etc. I also go for the entrance exams which all these institutes conduct every year. You can prepare for CAT, XAT, IIFT, CMAT etc. It will surely help you to get better college. Good lu