Successful UPSC candidates prefer various methods of note-taking, emphasizing effectiveness and clarity. The structured note-taking method, such as the Cornell system, is commonly used, allowing candidates to categorize key information while ensuring review clarity. The use of mind maps is also popular, as visual representations enhance understanding and retention of complex topics. Candidates often integrate color-coding and summary sections to highlight essential points. Additionally, concise bullet points and personal annotations on reading materials can facilitate active engagement with content. Ultimately, the chosen method depends on personal learning styles to optimize information retention and retrieval.