What Is Sociolinguistics? by Gerard Van Herk is the most student-friendly introduction to the field. Find it legally, read it carefully, and you will see society—and yourself—in every spoken word.
What happens when languages crash into each other? Van Herk covers pidgins (simplified trade languages), creoles (pidgins that become native languages), and the concept of diglossia (a society where two languages are used for different purposes, like High German vs. Swiss German). what is sociolinguistics gerard van herk pdf full
Unfortunately, I couldn't find a direct link to a PDF of Gerard van Herk's post on sociolinguistics. However, I can suggest some possible sources where you might find his work: What Is Sociolinguistics
If your library doesn't have it, request an Interlibrary Loan. A librarian will scan a physical copy or locate a digital copy from a partner university and email it to you as a PDF. What happens when languages crash into each other