M. Laxmikanth's " Indian Polity " is widely considered the "Bible" for UPSC Civil Services aspirants and other competitive examinations. While the (originally released around 2013) is an older version, many students still seek it via Google Drive links for its clear foundational explanations. Overview of Indian Polity by M. Laxmikanth (4th Edition)
: Extensive sections on Panchayati Raj and Municipalities. Availability and Digital Access
: Comprehensive coverage of individual liberties and state duties.