In this tutorial, we assume that the "OpenVPN" VPN client is already installed, and you have copied a configuration into your Documents/OpenVPN/ folder.
If this is not the case, I invite you to follow this tutorial:
In the taskbar, you will see an icon of a screen with a padlock. Right-click on it and click "Connect":
A window will appear (do not touch it):
A tooltip indicates that you are successfully connected:
And there you have it, you are now connected via VPN!