Effective note-taking strategies for UPSC examination prep include using methods like the Cornell Systems or mind mapping. These techniques help in organizing thoughts systematically, making it easier to review later. Candidates should prioritize summarizing information in their own words to enhance retention and understanding. Color-coding important themes and creating visual aids can improve recall. Regular revision of notes is also crucial, as it reinforces learning and enables candidates to connect various subjects seamlessly, making them well-prepared for both preliminary and mains examinations.