Effectively summarizing chapters for comprehensive UPSC studies can be achieved through methods like creating concept maps or bullet points that capture essential ideas. Candidates should focus on summarizing key themes, important dates, and significant figures, noting connections between different topics. Techniques like the SQ3R method (Survey, Question, Read, Recite, Review) can enhance comprehension and retention. Regular reviews of these summaries further reinforce memory, making the study process both streamlined and effective.