The advancement of science and technology has brought about a great change in the field of books. Five centuries back, the books as we have today did not exist. But machines and technology have helped in the spread of knowledge. Moreover, the high percentage of literacy, the growth of libraries in towns and villages and growing fondness of the intellectuals to have their private libraries have led to the growth of publishing industry. This in turn contributed to the spread of knowledge and information. Books are written by experienced persons who are wise and have matured minds. They are full of ideas, and thoughts which enlighten us and guide us at the time of trouble. There are books which entertain, enthrall and thrill us according to our taste.