An Introduction to Sociolinguistics, 4th Edition by Janet Holmes delves into the dynamic relationship between language and society. This classic introductory work examines how language functions in various social contexts, exploring its role in signaling and interpreting different aspects of social identity. The book is structured into three sections that explain fundamental sociolinguistic concepts through both traditional perspectives and recent research findings. Updated throughout, the fourth edition includes new sections on koines and koineisation, linguistic landscapes, New Englishes, stylisation, and language and sexuality. Written with Holmes’ characteristic enthusiasm, it serves as an engaging guide for readers to navigate this fascinating field.