Effective note-taking skills in UPSC preparations require methods that enhance retention and understanding. Aspirants can benefit from organizing notes hierarchically, using bullet points, and incorporating diagrams for visual aid. Employing techniques such as the Cornell Method or mind mapping facilitates the capture of complex concepts in an organized manner. Additionally, regularly revising and summarizing notes can reinforce memory and aid in quick reference during the final preparation stages, ensuring aspirants are well-prepared for extensive learning demands.