On Knol there are more than 9500 essays and articles on marketing, advertising and selling. The best of these articles assembled into a knol book on marketing. The book is assembled into a two level structure. In the first levels, readers will see variuos chapter collections. Under each chapter collection, the relevant articles of the chapter are collected. For some topics more than one article are included to provide variety to the reader. The book will be updated periodically with new articles posted and edited.