Civil Servant (IAS/PCS) exams

1.History Of Modern India Bipan Chandra. (History)
2.Indias Struggle For Independence Bipan Chandra. (History)
3.Indias Ancient Past R.S. Sharma. (History)
History Of Medieval India Satish Chandra. (History)
4.The Wonder That Was India A.L. Bhasham. (Culture)
5.Indian Art and Culture Nitin Singhania. (Culture)
6.Geography of India Majid Husain. (Geography)
7.Oxford School Atlas Oxford. (Geography)
8.Certificate Physical and Human Geography Goh Cheng Leong. (Geography)
9.Indian Polity for Civil Services Examinations M. Laxmikanth. (Polity)
10.Indian Economy Ramesh Singh. (Economy)
11.Economic Survey. (Economy)
12.Science and Technology in India TMH. (Science and Technology)
13.Environmental Studies: From Crisis to Cure Rajagopalan. (Environment)
14.Environment for Civil Services Prelims and Mains Khuller. (Environment)
15.India Year Book (Current Affairs)
16.Manorama Yearbook. (Current Affairs)
17.CSAT Paper 2 Manual by TMH or CSAT-II 18.Arihant (CSAT Paper 2)
19.Analytical Reasoning M. K. Pandey (CSAT Paper 2: Analytical Reasoning)
20.Verbal & Non-Verbal Reasoning R. S.Aggarwal (CSAT Paper 2: Reasoning)

There are two ways to become IAS officer i.e, by appearing in Civil Service Examination and by appearing in PCS examination conducted by various state Public Sector Commission. PCS officers become IAS after gaining experience and performance. In order to help you few datils on Civil Service Examinations and PCS are givem below:
The Civil Services Examination is a nationwide competitive examination in India conducted by the Union Public Service Commission (UPSC) for recruitment to various Civil Services of the Government of India, including the Indian Administrative Service (IAS), Indian Foreign Service (IFS), Indian Police Service (IPS) and others services. Eligibility condition for appearing in civil services examination is as follow:
(a)The candidate must hold a PASS BACHELOR'S degree from any of the Universities incorporated by an Act of the Central or State Legislature in India or other educational institutions established by an Act of Parliament or declared to be deemed as a University, under Section-3 of the University Grants Commission Act, 1956, or possess an equivalent qualification.
(b) Candidates who have appeared or intend to appear for the final examination and are awaiting results are also eligible to apply for the Preliminary Examination.
(c)A candidate must have attained the age of 21 years and must not have attained the age of 32 years.
(d)You may refer to UPSC website for other eligibility criterion.
It is conducted in two phases - a preliminary examination consisting of two objective-type papers (general studies and aptitude test), and a main examination consisting of nine papers of conventional (essay) type, followed by a personality test (interview). Out of "NINE" there are two qualifying papers; i) any modern Indian language (300 marks) ii) English (300 marks). The marks of these two papers will not be counted in the merit list of the main examination however, qualifying in these two papers is compulsory. Out of "Seven" Papers there are "Five" compulsory papers and Two Optional papers from the subject of your choice.
Provincial Civil Services, abbreviated as PCS, are actually the civil based administrative services of the State Government. These officers relate to the policy making of the state to which they belong. These officers are also selected through an entrance test conducted by the state based Public Service Commission.
You are advised to look at eligibility criteria of PCS os state in which you are planning to appear.