The document discusses coursebooks used in English language teaching. It outlines different types of coursebook orientations including teacher-based, student-based, and learner centered. It also lists common coursebook components such as readings, resources, CDs, and tests. The document notes pros of coursebooks such as efficiently organizing progress, providing a structured syllabus, and including interesting content. However, it also discusses cons such as teachers relying too heavily on coursebooks and texts sometimes lacking engagement. It concludes by mentioning adding, adapting, and replacing coursebook materials.