The Directorate General of Civil Aviation is the regulatory body in the field of Civil Aviation primarily responsible for regulation of air transport services to/from/within India and for enforcement of civil air regulations, air safety and airworthiness standards.
The regulations are in the forms of the Aircraft Act, 1934, the Aircraft Rules, the Civil Aviation Requirements, the Aeronautical Information Circulars. The Advisory and guidance material is in the form of circulars.
The DGCA website offers a 'New and Updated' section that gives the latest in regulations. While it is your responsibility to make sure all your regulations are up-to-date, this service should assist.