Online resources and apps play a significant role in UPSC preparation, offering aspirants access to vast study materials, practice tests, and current affairs updates. Platforms like Insights on India and Clear IAS provide structured content and personalized learning paths. Mobile applications facilitate on-the-go learning with quizzes and flashcards. Social media groups foster community interactions and knowledge sharing. Moreover, webinars and live sessions with experts can enhance understanding and provide valuable tips for exam strategies.