Key resources for preparing for the Geography component of the UPSC include NCERT textbooks, which cover fundamental concepts concisely. Additionally, reference books such as "Physical Geography" by Savindra Singh and "Human Geography" by Majid Husain are highly recommended. Aspirants should also utilize online resources like GIS applications, maps, and current geographical events, providing practical insights. Regularly engaging with geographical surveys and reports further aids comprehension, making geographical literacy vital for an informed UPSC candidate.