First of all, you cannot connect the drive to the computer directly using the usb port. It won’t work, and you might damage something. That usb port is for adding usb drives to the My Book World.
Secondly, you don’t connect the ethernet cable from the drive to your computer. You need to connect the drive to your router. Before you do that, I would uninstall all the software you installed on the computer when you started. If you don’t plan on using remote access you do not want MioNet on your computer.
Next, open My Computer and type in the address bar, either \mybookworld or \wdstorage. You should see the public folder of the drive show up in the window below. You can then right-click on the public folder and left-click on map network drive. Accept the default settings and click finish. You have created now a path to your network drive that you can copy and paste data into.