"No-Code Tool Google AppSheet Standard App Development Introduction: Ready for Action! With Function Appendix" Yoshi-zumi Information Co., Ltd. Hayato Ito / Teruhisa Ishino / Takashi Eguchi / Reon Horii / Hideki Matsushima Price: ¥3800 This is the first edition. I gave up on this book because my understanding wasn't sufficient. Therefore, I haven't used it much, but there are scratches and folds on the cover. If you are okay with this, please consider purchasing it. Please check the images.