If you are interested in mobile marketing, specifically in learning how to launch an effective mobile marketing campaign and get the best return on investment with it, you will find The Mobile Marketing Handbook useful.
The step-by-step approach is specifically designed for marketing professionals and entrepreneurs who need practical advice on getting started with and/or improving mobile marketing campaigns.

Within this book, you’ll find everything from strategic decision making to tools and techniques like text messaging, mobile website creation, mobile promotion, and proximity marketing to use to market with mobile. Many of the companies used as examples and some of the vendors included as resources are North American, but it is important to note that the strategies and principles are applicable around the world.

download link