This is a case-driven crash course on state trees. I have provided a self-made downloadable base project on github for this tutorial. Starting from this base project, I will introduce in detail the core concepts of state trees and develop a series of AI functions based on state trees.
https://dev.epicgames.com/community/learning/tutorials/l0RE6/unreal-engine-chinese-with-english-subtitles-ue5-8-crash-course