Book excerpt: The Routledge Handbook of Second Language Acquisition and Corpora is a state-of-the-art collection of cutting-edge scholarship at the intersection of second language acquisition and learner corpus research. It draws on data-driven, statistical analysis to outline the background, methods, and outcomes of language learning, with a range of global experts providing detailed guidelines and findings. The volume is organized into five sections: Methodological and theoretical contributions to the study of learner language using corpora – setting the scene Key aspects in corpus design, annotation, and analysis for SLA Corpora in SLA theory and practice SLA constructs and corpora Future directions This is a ground-breaking collection of essays offering incisive and essential reading for anyone with an interest in second language acquisition, learner corpus research, and applied linguistics.