The central message of chemistry is that the properties of a substance come from its structure. Someone with training in chemistry can look at the structure of a substance and tell you a lot about its properties. Organic Chemistry has always been and continues to be the branch of chemistry that best connect structure with properties. This text has a strong bias toward structure and this book benefit from the availability of versatile new tools to help us to understand that structure. The text of this book organized to flow logically step by step from structure to properties and back again. As the list of chapter titles reveals the organisation is according to functional groups structural units within a molecule most responsible for a particular property because that is the approach that permits most students to grasp the material most readily. Students retain the material best, however, if they understand how organic reactions take place. The language of book is very simple explanations clear presentation is very systematic and concepts of reaction mechanism part that usually confuse the students are explained in a step by step manner.