You're looking for information on "Minna no Nihongo PDF Drive 2021". Here's what I found:

When using these materials, it is best to follow a specific study flow. Start by reading the vocabulary and grammar explanations in the translation book. Once you understand the concepts, move to the main textbook to practice the Ren-shu (exercises) and listen to the accompanying audio. Consistent practice with the "Mondai" (problem) sections at the end of each chapter ensures that the information sticks.

The series is split into Shokyu I (Beginner 1) and Shokyu II (Beginner 2), covering approximately 50 lessons that align well with JLPT N5 and N4 levels.