Each lesson is divided into texts, new words, language points (grammar), and exercises.
The Boya Chinese series, published by Peking University Press, is one of the most respected Mandarin curriculum sets in the world. It is divided into four main levels: Elementary, Pre-Intermediate, Intermediate, and Advanced.
If you find a digital copy of the book, don't just let it sit in your "Downloads" folder. Here is a strategy for success: