Effective note-taking can enhance UPSC exam preparation by promoting active engagement with the material. Techniques such as the Cornell Method or mapping information visually organize content, making it easier to review and recall. Summarizing concepts in one's own words strengthens understanding and retention. Using bullet points for key information and highlighting essential terms aids in quicker revision. Moreover, regularly updating notes with current affairs ensures that candidates remain informed. Well-structured notes allow for efficient revision, saving valuable time while preparing for exams and enhancing overall performance.