Here are the best ways to get a legitimate copy:

Do not rush. Master one topic before moving to the next.

This is the million-dollar question. The is an excellent tool , but it is not a magic wand. Here is the reality of using it for self-study.

Below is a draft "solid paper" structure (such as a study guide or syllabus) that covers the essential components found in these materials. Language Proficiency Roadmap: Levels A1 & A2 1. Grammar Fundamentals