Preparing Anthropology for UPSC CSE optional subject can take up to 5 months. One should always start by knowing the syllabus thoroughly. Reading Indian Society of NCERT books will form the basics. After this, you can move on to fundamental books like Indian Anthropology by Nadeem Hasnain, Anthropology, an optional book by Dr. Huma Hassan, etc. Simultaneously, after the completion of each chapter, you can start solving Test series and questions from PYQ. Getting these answers evaluated by the best UPSC Anthropology optional teacher can help you get better marks in your exam.