"The textbook 'Portuguese as a First Language' is a comprehensive work that addresses the role and challenges of the textbook for the Portuguese language as a first or native language. The authors, Marcos dos Reis Batista and Éderson Luis Silveira, present a collection of studies and reflections written by various researchers. These works illuminate not only the textbook itself but also the interactions and relationships of users with this material. The texts are written in clear and practical language, aimed at providing valuable support to educators in the field of Portuguese language teaching. The book is a significant resource for anyone involved in teaching the Portuguese language and looking to improve the quality of instruction.".