Update it
apt-get update
apt-get upgrade
wget https://git.io/vpn -O openvpn-install.sh && bash openvpn-install.sh
Make sure to check if detected IP address is correct. After that you may just press enter to every question script asks.
It should be in your home directory called something like client1.ovpn. Download it somewhere to your computer that you wish to connect through a VPN connection.
To create a new user go to your home directory where you downloaded openvpn-install.sh script and type
bash openvpn-install.sh
Then you should choose option "1" to create a certificate for a new user. Press Enter and then download this newly created certificate to clinet computer.
https://openvpn.net/index.php/open-source/downloads.html
Go through the setup process. Default install location will be C:\Program Files\OpenVPN
Default location of config folder is C:\Program Files\OpenVPN\config\
An icon should appear in your tray. Double click it and you should see it connecting to your VPS to aquire a VPN connection. If OpenVPN is connected successuflly its tray icon should become green.
Go to some website that allows you to check your IP adrres. Example: https://ifconfig.co/
Your IP address shown on such site should be the same as your VPSs IP address.
From https://tunnelblick.net/ you can download an OpenVPN Gui client for Mac. Double click on a downloaded .dmg file and follow instructions.
To download a client certificate that you've previously created (for example it's name is client1.ovpn) for your Mac type in terminal:
sftp server_user@server_IP:client1.ovpn ~/
This will download client1.ovpn to your Mac user home folder.
To use client1.ovpn certificate you need to drag it to the top bar and drop it over TunnelBlick icon. Then click on TunnelBlick icon and choose "Connect client1"
Go to some website that allows you to check your IP adrres. Example: https://ifconfig.co/
Your IP address shown on such site should be the same as your VPSs IP address.