Some of the books that can be helpful to get into banks are available in markets. Magical Book Series and Analytical Reasoning by Shri MK Pandey can be referred. In that book there are all the important likely questions which can be a part of the exam. That is why this book is preferred. The contents in this book include questions and answer, decision making, input output concepts and action based questions.  These kinds of books give a rough idea about the paper and also the decision which you can make when you hold a prestigious place in bank.

Objective Arithmetic by Dr. R S Aggarwal is also a good book which can be referred. Banks means numbers and when numbers are there then simplifications and basic formulas are going to come. This book has all types of arithmetic questions which is useful for banking exams. Besides reasoning and math there is quantitative aptitude. Magical Book by Shri M Trya can be useful to answer quantitative questions in exams. These are the best books for bank exams which are available in the market and they are not even expensive. So there is question of being cheap or expensive.

English is easy by Shri Chetanand Singh is also a book which should be read before appearing for bank exam specifically if you are applying for IBPS Exam. There are many questions on English language also which should be answered. For those reasons this book can prove useful. Not only the above mentioned books you should daily read newspapers and should be aware of what is happening in the world. Many questions on current affair are also asked in the paper. So, you have to read newspaper daily especially the finance part as maximum question come from that section. Your preparation should be like this.

A good preparation immensely and even more a good book could just about help you scrape through that exam. Make sure that concentrate on smaller efforts like arithmetic, English, logical reasoning. Daily practice and a concentrated effort on knowing the current affairs may also do the trick for you in cracking the exam and getting a suitable banking jobs.