Here I am giving name of some best books for preparation of Jharkhand Public Service Commission examination below :

You should prefer following books for the preparation purpose:
N.C.E.R.T.BooK [Std.xi & Std.xii]
R.S.Agarwal [Arithmetic]
Krishna Reddy [Ancient, Medieval, & Modern India
J.L.Mehta [medieval India]
History and Civics by Xaviers Pinto
Chronicle Year book of Grammar-Oxford Publications
B.L.Growers [Gandhi,Subhash ]
Wren & Martin {English Grammar]
D.D.Kausambi’s Historical Outline [Ancient India]
A.L.Bashamâs [Buddhism & Jainism]
Chronicle Year book
R.S.Agarwal [Arithmetic]
Wrein & Martin {English Grammar]
Essential of Grammar-Oxford Publicatiosn
Upkars Publications Ever Latest General Knowledge by Khanna and Verma
History and Civics by Xaviers Pinto

The question paper will cover following topics:
General Studies Paper-1
Indian Geography
History of India and Indian National Movement
Question specifically related to Jharkhand.
Indian Polity and Economy, History, Geography, Economy
Science and technology
National and International events
General miscellaneous questions about sports, Disaster management etc

General Studies Paper-2
General mental ability
Hindi and English comprehension
Logical and analytical reasoning
Interpretation and communication skills
Problem Decision making