Techniques to master specific topics within the UPSC syllabus include active learning strategies such as note-taking, mind mapping, and frequent revisions. Breaking topics into smaller, manageable segments allows for better focus and comprehension. Utilizing online resources, such as webinars and educational videos, can complement traditional study methods. Regularly practicing past question papers and taking mock tests also aids in reinforcing knowledge and improving time management skills. Engaging in group discussions can provide diverse perspectives and enhance understanding, making the study process more dynamic and effective.