I bought the slate as it was recommended to me as a good travel router.
I’m having trouble setting up the VPN (bare with me because I’m pretty new to VPNs). What’s the difference between the OpenVPN and Wireguard? And can I set it up to use out the box or do I need to pay for a VPN subscription somewhere?
If you buy 2 GL routers you can out of the box set up a basic VPN connection on your home internet (but remember you need to apply or have a PUBLIC ip address, that is an IP reserved to you or shared but accessible from the outside internet; The IP can be dynamic too, GL has a DDNS service for free).
As Luo said, you can also get 1 GL router and get a VPN provider, for the same result.
Both work of the box. I do recommend wireguard since the performance is much better. With OpenVPN you will only get around 8mbit max, while Wireguard can do around 80% of your internet connection (80mbit on a 100mbit line).