Blended learning (BL) is usually defined as a combination of face-to-face teaching and online study. There are many ways of implementing BL, and this timely 278-page guide is concerned with best practice. It contains contributions from over twenty authors. Each of the five sections contains three chapters. The book includes a detailed exploration of second language acquisition theory. There are fascinating accounts of the positive effects of asynchronous online communication on students’ oral production, ‘flipping’ the classroom so students receive language input before class, and mobile learning. The section on adaptive learning alerts us to future developments. This book successfully connects the worlds of research and practice. It concludes that pedagogy is the most important factor in designing a good course, not technology. Recommended.