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Ok out of scope and didn't want to hijack that thread. Setup of server and client is not that hard. Installing on Windows is a simple happy click action and most important thing for configuration is that you got the certificate thing sorted. For details I would always use the OpenVPN manpage which ist still current for 2.3 https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage

If you get stuck and have a specific question send me a PM.

Cheers.