The I Ching (or Yi Jing) Chinese Book of Changhes, and its many commentaries,are an excellent place to start. The legend is that King Wen saw markings on the back of a turtle that led him to create the 8b trigrams and the 64 hexagrams that derrive from those 8 trigrams. I especially like the I ching hexagram readings at iching.com. Hexagram 1 is titled Yang, and 2 is titled Yin. They are the Creative and the Receptive principles. and contemplate a loop between creating and receiving information in the quantum (unified) field. I recommed the Carol Anthony commentaries strongly also. See the wikipedia entry on the i ching. See also https://en.wikipedia.org/wiki/Yin_and_yang.