To stay updated with national policies for the UPSC examination, key resources include government publications such as the Economic Survey, Union Budget, and current affairs magazines like Yojana and Kurukshetra. Candidates should also regularly consult established newspapers like The Hindu or Indian Express for political and social developments. Online platforms like PIB (Press Information Bureau) provide updates on government initiatives. Participating in webinars and online courses can also enhance candidates' understanding of complex issues, ensuring a well-rounded knowledge base for the examination.