If considering taking a sociolinguistics course, we recommend you watch this video that discusses a broad range of topics covered under the umbrella of "Sociolinguistics", the study of language in the various contexts of societies and cultures.
Introducing Sociolinguistics by 
A Dictionary of Sociolinguistics by 
Introducción a la Sociolingüística Hispánica by 
Spanish Language Use and Public Life in the United States by 
