Open Systems Preferences from sidebar or from Apple menu.
Hit "Network" Item.
In the bottom of left sidebar click plus + button for adding new connection.
Select Interface VPN, Type: Ikev2, and name our service. Click Create Button.
Next enter one of our server addresses and click "Authentication Settings" button.
Enter login and password obtained from settings page on our site and click OK.
After this steps you are ready to connect. Press Apply, and then Connect.
At the dowload page you will find ready configuration files for different software. One of them for Tunnelblick, this is open-source VPN client. More details you can find on the official web-site: https://tunnelblick.net.
With this software you can easily set up new connection: just download desired server config and drop it in Tunnelblick software.
And you ready for connection!