Which book of this type is more famous, Yin Yang, Feng Shui, or Zhouyi?

Beginners should not directly learn the metaphysical part of Yi Xue, especially young people. I recommend reading the original text of "The Book of Changes" first, and then the "Ten Wings" annotated by Confucius and his disciples, namely Tuan, Xiang, Xi, Wenyan, Shuo Gua, Preface Gua, and Miscellaneous Gua. (In most current editions of "The Book of Changes", Tuan and Xiang are placed directly after the hexagrams.) It is mainly understood from the perspective of humanities. If you want to learn well and take the right path, you must first read the original text, or even memorize it! Never be too ambitious in learning physiognomy, Feng Shui, or divination! This is my experience in the past few years, and it is also the warning of my predecessors! I also recommend Nan Huaijin’s Miscellaneous Notes on the Book of Changes and Biography of the Book of Changes. These two books are well-referenced and also mention a lot of metaphysical things.