As an experienced judoka, I can appreciate having the gokyo displayed so well. The preparatory steps before the entry are crucial for applying the kuzushi (off balancing), that will make the throw effortless. These 40 throws are the core throws, arranged as the founder of judo (Jigoro Kano), arranged them. This is a great guide, but to learn judo you need a good instructor, good partners, and the discipline and resolve to stay the course. Judo means "the gentle Way", with "Way" understood to mean Tao, as in Chinese Taoism, ("Do" in Japanese). Lessons learned in judo have a transfer value to everything else in life. Enjoy.