Key to the provision of education in the era of the fourth industrial revolution is understanding the use and applicability of various technologies with 21st century learners, as well as being able to assess the usability, implementation, and evaluation of any technological tool that an instructor (or learner) may choose to use. As such, this text aims to not only introduce teachers of English to speakers of other languages (TESOL) to the theories behind this topic, but, more importantly, it seeks to present a range of practical means of providing digital language learning and teaching in ways that can benefit instructors and pupils alike. Of significance, content has been specifically developed by both native and non-native English language teachers, to encompass a range of methods and approaches, as well as a variety of linguistic outcomes suitable to a range of teaching and learning contexts. These include that of young learners through to young adults, and all those undergoing life-long learning. As such, the book is an essential read for any educator, student, administrator, or stakeholder involved with the TESOL industry, particularly those who want to understand how pre-service and in-service teachers are honing their technological teaching craft, and how digital language learning and teaching currently, and will potentially, impact the educational sector.