The book "Which Grammar to Teach, Which Grammar to Learn" offers a comprehensive analysis of grammar instruction in the educational field. It is divided into three main chapters that address different aspects of grammar and its teaching. The first chapter discusses the diversity of grammar works, while the second chapter focuses on which grammatical concepts are significant for learners. The concluding chapter provides valuable insights and recommendations for educators to teach grammar effectively. The book is aimed at professionals in education and offers both theoretical and practical approaches to grammar instruction. With a solid bibliographic appendix, it serves as a useful reference for anyone involved in the teaching of grammar.