Companies like VyprVPN (https://www.goldenfrog.com/vyprvpn) and countless others give you a VPN to use as a secure tunnel to the wider internet in case you're on public WiFi and don't trust the network. This is different from a VPN that lets you access your network at your office or your house.
How can I set up this kind of VPN Proxy myself?
I have a low-power box I'd like to keep running at my house and be able to connect to it remotely to have a secure internet connection and route all traffic through it, but not access anything inside my house.