Effective organizational strategies for handling UPSC preparatory notes include creating a systematic framework for categorization and review. Candidates should group notes by subject, topic, or themes to facilitate quick revision. Utilizing digital tools like note-taking apps or spreadsheets can enhance accessibility and allow for easy updates. Additionally, creating summaries and flashcards for quick reference aids memorization. Regular revision schedules should be integrated to reinforce learned material. Implementing color coding for urgent topics or key concepts also aids in quick identification, streamlining the revision process efficiently.