Introducción a la Sociolingüística Hispánica is a much-needed introduction for undergraduates to the study of sociolinguistics in the Spanish-speaking world. The book is written in Spanish, with an intended audience of second- and heritage-language speakers, so is paced accordingly with a minimum of jargon. The chapters are organized into sections covering the major sociolinguistic subfields, including foundations concepts for sociolinguistics, phonological variation, morpho-syntactic variation, language in contact, code switching, bilingualism, Spanish in the United States, language attitudes, language and power and ideology, language and the law, and language and gender. In exploring the social meaning of language choices, each chapter provides an outline of topics covered, an introduction, a review of topics, a summary, a section of key terms, exercises and questions on the material, and a selected bibliography. In addition, all chapters are complemented with data analysis exercises and small hands-on projects for practicing the theoretical concepts presented, using electronic databases, popular music and audiovisual material.