Chapter 5 describes the fundamental research questions, empirical approaches and findings of corpus linguistics. Basically, it is an empirical approach investigating language use in its natural context with different types of corpora as its data base. Methodological issues include considerations on corpus linguistic approaches, types and criteria of corpora, steps of corpus analysis, such as tokenisation and tagging, and finally types of analysis. The chapter ends with recommendations for further reading and a list of short exercises and ideas for small research projects.