Hey.

You can pursue law in 2 ways. First being the 5 years law. You can get admission in the colleges offering BA LLB, BBA LLB, B.Com LLB from various colleges. For this you will have to appear for CLAT, AILET, LSAT India etc. It is an integrated course in law. The duration in 5 years.
Second is the conventional 3 year law after completing under graduation. There are various entrance exams for this course too like DU LLB Entrance Exam, BHU LLB Entrance exam, etc. The duration is 3 years. This course is conventional course of law.

Hope this helps. All the best.