I have a headless machine running Lubuntu that I'm using a file server. I already SSH into it, and use remote desktop from within my local network to do any maintenance I need, either on the desktop or via the terminal.
The last step, as far as I can see, is setting up a VPN. I would call myself an intermediate computer user; I can use the terminal from instructions comfortably, and understand the basics of LAN and WAN. Unfortunately, the instructions I can find for setting up a reliable VPN on Ubuntu (I believe OpenVPN) are either incomplete, incorrect or too complex. All I want is to have the VPN running on my server from startup, and use it on a laptop, mobile and tablet when out and about to access files and music.
Can anybody either help me out directly, or point me to a well-written, reliable web resource that can help me? I'm pulling my hair out...