I am a B.tech 2nd year cs branch student.i want to clear the IAS exam but now i am confused. So please tell me that which book is best for me. Now I want to start my preparation from base. I want to take history as a optional subject.

 
Hi,
There are a number of books available for studies ...which can help you prepare for IAS exams on your own..
FOR GENERAL STUDIES::
History books of Classes XI and XII - NCERT
Introduction to Indian Constitution - D.D. Basu
Principles of Geography (Class XII-Part I, II)
Evolution of Indian Economy - NCERT
Book on Statistics (Class XI) - NCERT
Our Parliament - S.C. Kashyap
Indian Economy - Dutt and Sundharam/Mishra and Puri
 
FOR HISTORY::
Historian's Craft    Marc Block
 History of India, Vol. I    Romila Thapar
Indian Feudalism    R.S. Sharma
Constitutional History     Pravin Kumar
Gandhi    B.R. Nanda
Age of Empires    E.J. Hobsbawm
Western Civilizations    Burns & others
Age of Revolution    E.J. Hobsbawm