Various sources contribute to a well-rounded preparation for UPSC by offering diverse perspectives and materials. Core resources include standard textbooks, online courses, select magazines, and quality news articles to stay updated on current affairs. Engaging with mock tests provides valuable practice while enhancing time management skills. Supplementing these with discussions in study groups fosters a deeper understanding through shared insights. Moreover, revision from previous years' papers highlights key trends and frequently asked questions, ensuring a comprehensive approach to preparation.