Language is all around us. Language allows us to share complicated thoughts, negotiate agreements, and make communal plans. Our learning, our courting, our fighting — all are mediated by language. You can think of language as a technology — humans manipulate their bodies to produce sounds, gestures, and appearances that encode messages using a shared system. How then does the technology of language work? Answering this question is surprisingly hard; our language skills are automatic and therefore hard to reflect upon. Nevertheless, throughout the centuries, scholars have devised ways to study human language, although there is still much more research to be done and many mysteries to explore. The field of scholarship that tries to answer the question "How does language work?" is called linguistics, and the scholars who study it are called linguist. This book contains various aspects of Linguistics. Started from the understanding of Linguistics, until the kinds of Linguistics. Students are expected to be able to understand Linguistics after they read this book.