The field of TESOL (Teachers of English to Speakers of Other Languages) has experienced a considerable shift over the years in the theories, principles, and practices of English language teaching. As English continues to hold a position as a global language, teachers are faced with both the challenges and opportunities of understanding and adapting to the changing landscape of English language teaching to meet a variety of needs within diverse contexts. This book provides a glimpse into the field of teaching English both within English-speaking communities and in international contexts by providing beginning ESOL teachers with foundational knowledge and a guiding framework to support their teaching practice in their respective contexts.