please guide me for books for wbpcs subject wise

The best Book for Objective General English asked in preliminary for the new aspirants is the one by S.P Bakshi (Arihant publication). For Comprehension, you may take the help from K.D. Sarkar.

For current affairs, you can refer to magazines like Pratiyogita Darpan, Yojna, Competition Success Review (CSR) and newspapers like The Hindu and The Indian Express.

For Quantitative Aptitude and Reasoning, ypu cqn refer to R.S. Agrawal.

If you want to score great in Indian Polity and Economic then you must have to go through your NCERT. Apart from that Indian Polity by M Laxmikanth and Indian Economics by Ramesh Singh(Indian Economy) can be a great option.

for general science, you don’t have to go anywhere just revise your basics of Physics, Chemistry, and Biology from the NCERT books. Apart from that, you may also take help from magazines like Chronicle science book and books by Tara Chand or, Jigeeshas Civil Services (Preliminary) Examinations General Science.

Candidate appearing for the preliminary exam, Indian history, and struggle movement can be best explained by the books written by Bipin Chandra.You can also take help from your class VI to class XII NCERT textbooks for in-depth knowledge. Books by Arihant publication can give you the best results.

To understand Indian national movement and contribution of our great freedom fighters, I would personally suggest you go through your NCERT textbooks. You can take reference from India’s Struggle for Independence and History of Modern India by Bipin Chandra.

For geography go back to your class VI to class XII NCERT textbooks to build basic concept. Reading Geography of India by Majid Husain is strongly recommended. For special attention on Bengal Geography, you can read any reference book of West Bengal secondary standard. A good command over atlas like by Orient Longman /Oxford can help you to fetch some extra marks.