Online resources can significantly enhance UPSC preparation. Platforms like YouTube offer video lectures from experienced educators, while MOOCs provide structured courses. Candidates can subscribe to credible websites for current affairs updates, which are crucial for the UPSC syllabus. Websites like Insights on India and mrunal.org offer extensive study material and topic-wise resources. Engaging in forums and study groups on platforms like Quora or Facebook allows candidates to share insights and strategies. Additionally, utilizing mobile applications for quizzes can foster quicker learning and retention. Effective online research aids both breadth and depth of knowledge.