Why is it best to learn calligraphy from seal script?

To learn calligraphy systematically, it is often necessary to understand the evolution and development process of Chinese characters first;

However, amateur calligraphy lovers can really make rapid progress simply. They don't need to learn from seal script or official script, but concentrate on learning running script. In order to meet the needs of study and work, they can get rid of some teaching routines and make their own way as soon as possible!