Recommended resources for preparing for the UPSC Civil Services Exam include standard textbooks covering the entire syllabus, curated online courses, and coaching institute materials. Candidates should keep updated with national and international news via reputable newspapers and magazines such as The Hindu or Yojana. Additionally, utilizing previous years' question papers, practice tests, and answer-writing workshops enhances preparation. Online forums and study groups can also be beneficial for discussion and doubts. Lastly, aspirants are encouraged to refer to government reports and publications for authoritative knowledge on relevant topics.