This course provides key aspects of language use and variation in context, the concepts and methods used to study them, and a range of relevant literature. Participants will be encouraged to read and think critically about the issues raised, and to develop specialist interests of their own. The course will be particularly relevant to those considering writing a thesis in the fields of sociolinguistics, applied linguistics or language learning. Initial sessions will present an overview of the field; thereafter, specific topics will be examined in greater depth through students’ presentations, group works, and discussions.