By downloading, you get an installer.
This compressed file or compressed folder contains the installer for the Astrology of I Ching. Open the compressed file with a double click of the mouse and then start the installer therein with another double click. Follow the instructions of the installer.
Call the setup file as usual by double-clicking and follow the instructions of the installer.
The installed program for the Astrology of I Ching requires a Java runtime environment, version 8 or later. If the program does not start as usual, check the software installed on your PC Java runtime environment with these few steps:
You do not have the required Java Runtime Environment, you can install on java.com a current Java runtime environment on your PC.