A guide for parents, but also a study book for students and educational professionals who wish to expand their knowledge and skills in dealing with multilingual children. The author is a linguist and educator, multilingual herself, and has lived and worked in many countries. In her book, she answers numerous questions, such as those regarding language behavior in the family, the critical periods for second language acquisition, and how to support children in this process. She addresses fundamental questions about language acquisition and language disorders, as well as the multilingualism of children with disabilities like Down syndrome or children who are deaf.