I have been writing about Yan Kai and want to learn running script. What copybook is better?

Yan and Ti transfer books directly, which is not easy to contact. You can practice excessive calligraphy first. Here, I recommend Chu Suiliang's Yin Fu Jing, which is just complementary to the face and body, and is very clever, which can increase your writing experience. Then learn running script. There are many running scripts, the first one is two kings, and then all previous generations of families can, depending on who you like.