This introductory chapter focuses not so much on mobile learning technologies per se, but rather on a theoretical foundation and its pragmatic application to designing learning activities with mobile technologies. It sets out three learning spaces that are explicitly considered in the book: individual, collaborative, and situated learning. On these differing learning spaces, we begin by proposing the essential factors in effective mobile learning experience design that should be addressed by different features or functions of the relevant learning activities. In turn, derived is a conceptual framework to provide systematic support for mobile learning expererience design. This chapter concludes by surveying the mobile learning systems included in this book, reviewing their differing learning activities within context of the framework. We hope that this analysis will help to expose the key qualities and features that can support the future development of increasingly effective mobile learning applications.