The UPSC (Union Public Service Commission) exam is one of the toughest competitive exams in India, and it requires a comprehensive and rigorous preparation strategy. One of the crucial components of UPSC preparation is choosing the right books. Here are some recommended books for UPSC preparation:

Indian Polity by M. Laxmikanth: This book is considered the Bible for UPSC aspirants when it comes to Indian Polity. It covers the entire syllabus of Indian Polity and Governance comprehensively.
India's Struggle for Independence by Bipan Chandra: This book is an excellent resource for modern Indian history and covers the freedom struggle in detail.
Economic Survey by the Ministry of Finance: The Economic Survey is an annual document that provides an overview of the Indian economy's performance and prospects. It is an essential resource for UPSC aspirants who are preparing for the Economics and Social Development section of the exam.
NCERT textbooks: The NCERT textbooks are a valuable resource for UPSC aspirants as they provide a strong foundation for the subjects covered in the UPSC exam. It is advisable to read the NCERT textbooks of classes 6 to 12 for subjects like History, Geography, Political Science, and Economics.
India Year Book: The India Year Book is an annual publication that provides information on various aspects of India like economy, polity, culture, and environment. It is an essential resource for UPSC aspirants as it helps them stay updated on the latest developments in various fields.
Geography of India by Majid Hussain: This book is an excellent resource for the Geography section of the UPSC exam. It covers both physical and human geography topics in India comprehensively.
Oxford School Atlas: The Oxford School Atlas is an excellent resource for UPSC aspirants preparing for the Geography section of the exam. It provides detailed maps and information about the different regions of India and the world.
Environment by Shankar IAS Academy: This book covers the Environmental Ecology and Biodiversity section of the UPSC exam comprehensively. It also includes current affairs related to the environment.
General Studies Paper-II for Civil Services Preliminary Examination by McGraw Hill Education: This book covers the CSAT (Civil Services Aptitude Test) section of the UPSC exam comprehensively.
Chronicle Magazine: The Chronicle Magazine is a monthly publication that covers current affairs related to various fields like politics, economy, science and technology, and international relations. It is an excellent resource for UPSC aspirants to stay updated on current affairs.
In conclusion, choosing the right books is crucial for UPSC preparation, and the above list of recommended books can provide a strong foundation for the subjects covered in the exam. However, it is important to remember that reading books alone is not enough, and aspirants must also develop critical thinking and analytical skills to succeed in the exam.