Your father said, "besides Chinese, math and English, it is calligraphy, because calligraphy can best reflect people's quality, and you will understand it later." This sentence is half right, learning calligraphy can only cultivate people's quality, but can't reflect people's quality. Because by learning calligraphy, you can learn from the ancients, cultivate your sentiments and make yourself different. China's cultural tradition has a history of more than 5,000 years. Calligraphy can be seen everywhere in past dynasties, including Yan Zhenqing, Liu Gongquan, Ou Yangxun and Zhao Mengfu. . . . Their life is a life of constant struggle, leaving a valuable calligraphy legacy for the Chinese nation. Everyone's noble qualities are passed down from generation to generation, and our descendants can learn from them, cultivate their own character and cultivate their own self-cultivation. There are many reasons, you will understand when you learn.
I suggest you start with regular script, which is the foundation. Then learn running script. . .