Prof. Shailu Singh - BCA, MBA (Marketing), PGDM (Marketing) is Assistant Professor of Tilak College of Science and Commerce, Vashi, Navi Mumbai. She has over 10 years of experience in teaching. She has qualified SET in management. She has also written many research articles for International Journals. The intention of writing this book is to help the students by providing contents in a simple and easy language as well as point-wise explanation will be better aspect of this book.