Abundant examples and exercises allow students to focus on how to do historical linguistics. The book is distinctive for its integration of the standard topics with others now considered important to the field, including syntactic change, grammaticalization, sociolinguistic contributions to linguistic change, distant genetic relationships, areal linguistics, and linguistic prehistory. It also offers a defense of the family tree model, a response to recent claims on lexical diffusion/frequency, and a section on why languages diversify and spread. Examples are taken from a broad range of languages; those from the more familiar English, French, German, and Spanish make the topics more accessible, while those from non-Indo-European languages show the depth and range of the concepts they illustrate.