Hi aspirant
You should mention your exam for which you wanted to prepare , still no problem. For general science you can buy arihant gs 2020 , it may be cost  Rs- 30inr and read English newspaper daily that will prepare your 2 sections i.e. English comprehension if it is there and g's , secondly for logical aptitude and reasoning you can prefer any preparation book of bank and entrance exams , you also can download last year question papers also and solve them.

Hope this is helpful.