You can pursue law in various types of courses. You can pursue LLB or any five-year integrated course (bballb or ballb). For both the courses you need to have an average of 50% in your graduated degree (for LLB) and 12th boards (for BBALLB AND BALLB). You can start by preparing for CLAT. You should join any crash course or buy books for elementary preparation for the entrance exam. Time management is very important