This text provides a general introduction to the Celtic languages. Beginning with an overview of the historical background of the language group as a whole, there follows a discussion of the two main sub-groups of Celtic: Goidelic, and Brittonic. The book then considers a range of linguistic features which are often regarded as characteristic of Celtic: spelling systems, mutations, verbal nouns and word order. A comprehensive bibliography and index enable the reader to pursue areas of interest further. Written in a clear and accessible style, with full use of tables and diagrams, the book represents an authoritative guide to the Celtic language.