This is billed as a book marketers around the world have been crying out for. And if, as the authors claim, it shows people "how to use the internet successfully to sell products", that's no surprise. For any director who thinks the digital revolution is something for others to worry about, here is an alarming wake-up call.

With 1.5 billion people online worldwide and others signing up daily, there are more reasons than ever to ensure your online marketing messages hit their target. The book is divided into sensible, predictable chapters, each one covering an important aspect of the subject. It also seems to be aimed squarely at marketers rather than techies. As the authors say: "Understanding people is the key to unlocking the potential to digital marketing."

The assumption that readers know nothing is sound, although it does lead to explanations of the obvious. The chapter on search-engine marketing is likely to be the most thumbed, but the real asset is a valuable collection of case studies, each of which demonstrates a vital lesson.

Kogan Page, £19.99