Awesome script to automatically configure OpenVPN on your VPS. The only one you'll need. Consistently updated. Handles LES plans with IPv6.
https://github.com/Angristan/OpenVPN-install
I modified the options and some of the config files to my liking (use 4096 bit keys, SHA-512, add OpenNIC DNS servers, auth-nocache, comp-lzo adaptive, etc.), but can be used well straight outta the box.
Enjoy!