Mutual information concept and Theorem

I have recently read entropy-related things. I have read some materials to learn about mutual information. I Have A Courseware that I think is well written, but I cannot download it, I have done it, and I hope it will help you. The content in this courseware is more basic than others, but it is very helpful for non-communication and information students, and not only easy to understand, but also detailed proof process, is a rare good material. It includes the concepts, theorems, and frequently-used conclusions of mutual information. It has been frequently used in some applications.

Mutual information concept and Theorem