The latest version of DVDFab can be downloaded at https://www.dvdfab.cn/download.htm

Download to your desktop or other convenient location. Right-click on the installer file and select "Run As Administrator".

In the first window, click on "Click to Install" to start the process or if you want to install it to a different directory, click the "Custom" on the right to choose a directory. You can also choose to create a desktop shortcut or not. 

Wait till the installation completes and Start DVDFab.

If you use the online installer, there will be a few more steps before the installation process actually gets start, after click "Click to Install", it will start to "Gathering download information, Check Data and Downloading", just be sure that the network is stable and the rest of the steps are the same.