The third edition of this successful text provides an ideal introduction for university students of English at the intermediate level. Students planning papers, dissertations or theses will find the book a particularly valuable guide. After introducing corpora and the rationale and basic methodology of corpus linguistics, the authors present a number of recent case studies providing new insights into vocabulary, collocations, phraseology, metaphor and metonymy, syntactic structures, gender and language, and language change. In a final chapter it is shown how the web and social media can be used as a source for linguistic investigations as well as including a section on creating your own corpus. Each chapter includes new study questions, exercises and updated suggestions for further reading. Readers also benefit from an accompanying web-page with exercises and updated information about freely accessible corpora.