Best practices for preparing relation maps in geography for UPSC include starting with a clear understanding of key concepts and themes. Use color coding to differentiate between types of information, such as physical, political, or economic features. An effective relation map should highlight connections and patterns, enabling better retention through visual representation. Regular updates of maps with current data and events keep the information relevant. Additionally, integrating maps with statistical data can strengthen candidates’ analytical skills, which are crucial for both the prelims and mains.