UPSC

Books that you can consider-
A. Paper I - General Studies
1. History (Indian History and Indian National Movement)
Essential:
NCERT books IX, X, XI, XII
Modern India by Bipin Chandra
2. Geography (Indian and World Geography)
Essential:
NCERT books IX, X, XI, XII
General Principals of World Geography by Charles Farro
School Atlas
3. Economics (Indian Economics and Economic Theory)
Essential:
An Evolution of Indian Economy by I.C. Dhingra
Economic Survey of India by Govt. of India
Economic Dictionary by Penguin
4. Polity (Indian Constitution)
Essential:
An Introduction to the Constitution of India by D.D. Basu
5. General Science (Physics, Chemistry, Biology)
Essential:
NCERT books IX, X
6. Environment (Ecology, Bio-diversity, Climate Change)
Essential:
Biology and Geography NCERT Books plus current events on Environmental Issues
7. Current Affairs
Essential:
Hindu and Economic Times Newspapers
Front line, Political & Economic Weeks Periodicals
B. Paper II – Aptitude
1. 0NCERT Mathematics VII, IX, X/
2. Data Interpretation and Data Sufficiency by Tyra and Kundan
3. Objective General English by R.S. Agarwal.
4. A Modern Approach to Verbal Reasoning by R.S. Agarwal.
5. A new Approach to Reasoning by Sijwali and Sijwali
Preparing for UPSC requires combination of smartness and hard work. Do the right things to gain an edge over your competition:
*Get the right books for Prelims.
*Start preparing at least 10 months before.
*Solve past year questions to test yourself on regular basis.
*Cover the scoring sections early.
*Cover the syllabus strategically. Don't go for a "prepare all" approach for prelims.
*Balance paper 1 and 2.
For more information you can refer to the below mentioned links:
http://www.upsc.gov.in/exams/notifications/2013/csp_ifs/csp2013.pdf
https://www.shiksha.com/getArticleDetail/192/Civil-Services-Entry