The syllabus for the UPSC General Studies Paper I includes topics such as Indian History, Cultural Heritage, Geography, and Society. Candidates should be well-versed in modern India, covering significant events from the 18th century onwards, along with understanding world history to some extent. The geography portion emphasizes physical and human geography of India and the world. Additionally, current events of national and international importance also play a crucial role, requiring candidates to stay updated. Overall, a comprehensive approach is essential for success.