There are many books available for UPSC IAS/IPS Exam preparation, and the best ones for you will depend on your individual needs and learning style. However, here are some books that are commonly recommended for UPSC preparation:
NCERT Books: These books provide a strong foundation in the basics of the various subjects, and are considered to be must-read for UPSC preparation.
Indian Polity by Laxmikanth: This book provides a comprehensive understanding of the Indian Constitution and the political system in India.
Indian Economy by Ramesh Singh: This book provides a detailed understanding of the Indian economy, including the various sectors and policies.
International Relations by Shankar: This book provides a comprehensive understanding of the international relations, including the various actors and events.
History of Modern India by Bipin Chandra: This book provides a detailed understanding of the modern Indian history, including the events and personalities that shaped India's past.
The Hindu: This is a well-reputed newspaper that covers a wide range of topics including politics, economy, international relations, science and technology, and culture.
Yojana and Kurukshetra Magazines: These magazines are published by the Indian government and cover a wide range of topics related to the Indian economy, polity, and society.
Economic Survey and Union Budget: These documents are published by the Indian government and provide a detailed analysis of the Indian economy, including the performance of the different sectors and the government's policies.
These are just a few examples of the many books available for UPSC IAS/IPS Exam preparation. It's important to note that along with reading these books, practice is also very important. Practice as many question papers as possible, make notes and revise them regularly.