All chapters are written by key figures in sociolinguistics and presents the personal stories of individuals using linguistic means to go about their daily communications, in diverse sociolinguistic systems such as: Providing new perspectives on crucial themes such as language choice and language contact, code-switching and mixing, language and identity, language policy and planning and social networks, this is key reading for students and researchers in the areas of multilingualism and super-diversity within sociolinguistics, applied linguistics and urban studies.