What I am reading now is the Notes to Zhouyi. Start with divination. Which one do you want to read? I'm reciting five lines, heavenly stems and earthly branches.

Good, keep working hard and know that you have five lines of gossip and heavenly stems and earthly branches! Look at the Book of Changes of Plum Blossom and Broken Island, and then look at the addition and deletion of Buyi, Yi Yin, Yi Mao, Zhouyi Ji Jie, Zhouyi Gu Shu Kao, Zhanyi Jie Mi, Nine Plus One and Heluo Jing Yun. Then there are three kinds: Magic Gate, Point-to-Point of Six Masters, Complete Works of Six Masters, Golden Mouth Formula of Big Six Masters, General Solution of Taiyi, and Push Layout. After learning these well, there are also the number of purple wars, the number of few children, the number of iron plates, the number of Antarctic gods and the number of Arctic gods.

If you want to learn the eight characters, you can read such books as A Thousand Miles of Birth Outline, Essence from Heaven, Jade Decision, Purple Boxing and Poor Sword.

Take your time. I recommend all the books that I think are very good. (For reference only! )