A vital primer for anybody interested in multilingualism, this new edition has been refreshed and updated, expanding its coverage and adding new topics such as linguistic imperialism, minority languages, and folk linguistics. A new chapter on recent developments covers the linguistic landscape, language planning, the 'new speaker' phenomenon and digital multilingualisms, and the addition of reflection questions at the end of each chapter encourages readers to consider their own experiences and the role and impact of multilingualism on the world around them.