PART I. THEORIES, RESEARCH, AND PRINCIPLES -- English Language Teaching Today: An Introduction by Willy A. Renandya & Handoyo Puji Widodo -- Student-Centred Learning in ELT by George M Jacobs & Willy A Renandya -- Using Local Languages in English Language Classrooms by Ahmar Mahboob & Angel Lin -- Applying Language Learning Principles to Coursebooks by John Macalister -- Current Issues in the…