Rohan Gupta is an award-winning, UGC-NET qualified Librarian and academic professional with a strong background in Library & Information Science. He is currently working at U.P. University of Medical Sciences (UPUMS), Saifai, and has also served in the Indian Army (Central Command). His professional expertise includes library automation, digital libraries, information management, and the application of emerging technologies such as Artificial Intelligence in library services. He has been recognized with the Best Medical Librarian Award - 2025 and has actively contributed to national and international conferences on Library & Information Science. His academic vision focuses on transforming Indian libraries into research-driven, technology-enabled knowledge centers aligned with the Viksit Bharat @2047 initiative. Through this book, he aims to simplify LIS concepts and support serious aspirants preparing for competitive examinations.