You can read Introduction to Traditional Chinese Medicine. There are lectures in the lecture hall, which is easy to understand. If you study, you can buy the university textbooks of People's Health Publishing House: basic theory of traditional Chinese medicine, traditional Chinese medicine, diagnosis of traditional Chinese medicine, prescription, internal medicine of traditional Chinese medicine and acupuncture. Look at it in order. If you want to go deeper, you can look at typhoid fever. There are a lot of TCM videos in Xidong.com.