For a person who doesn't know calligraphy, how to learn calligraphy and teach it well in the fastest way?

Practice more, go to the bookstore to buy calligraphy textbooks, and imitate others first! I will practice slowly. There are several calligraphy students in my studio. They usually practice by themselves, and the teacher occasionally gives directions. Now they are all practicing well! As for teaching calligraphy, if you practice more, you will naturally understand the experience and naturally teach others! Haste makes waste! Therefore, only by teaching slowly can we practice well!