Where are the resources for learning the Book of Changes?

Books like The Book of Changes can be found everywhere in bookstores. Yi Xue and Feng Shui have a wide range of applications. It has been an industry for thousands of years. If you want to learn real skills and techniques, you need to work hard on your own. Books in the bookstore may be deleted. Professional books can only be bought from professional teachers. Books are the foundation and guide people forward. However, if you want to learn the real thing by yourself, you need to start with professionals. This is just my advice to you.