For UPSC preparation, candidates should prioritize public administration, focusing on subjects such as governance, policy-making, and the role of bureaucracy. Additionally, fundamental concepts like Indian polity, economics, and international relations are crucial, given their relevance in the exam. Aspirants should be familiar with current affairs and understand the Constitution to navigate questions effectively. Lastly, developing analytical skills and understanding socio-economic issues will help candidates contextualize their knowledge, thereby making their answers more impactful and relevant in both the prelims and mains.