I haven't used it at all＼(^o^)／ It comes with explanations, so you can get started right away! 1 course [3 sessions total] 8,265 yen (tax included) ※Lump-sum payment only That's what it says!!! Expensive (crying) Do it, you idiot son!!!! There isn't a single book with the answers and how to think about the submitted assignments! I'm also selling other sessions! There are also bundled sales! I'm also selling the Everystudy textbook! Intensive training text for 6th graders, including math, science, and Japanese. - Title: Intensive Training Text - Subjects: Math, Science, Japanese - Grade: 6th Grade - Format: Textbook - Content: Study in a problem set format - Features: Structure that emphasizes how to think Thank you for viewing.