Candidates can leverage online resources for UPSC studies by utilizing reputable websites, educational platforms, and mobile applications. Resources like MOOCs, video lectures, and e-books expand their knowledge base effectively. Online forums and social media groups dedicated to UPSC can facilitate discussions and information exchange. Incorporating online mock tests and quizzes helps assess understanding and prepares candidates for exam conditions. Offline resources should also be complemented with digital content for a comprehensive study approach, enhancing both efficiency and depth of preparation.