Explain Like I'm 5- Raspberry Pi, GLiNet and VPNs

First, I’m sorry for adding to the continuous stream of VPN/Hiding location questions. I have tried my best to follow Chris’s Wiki VPN instructions and have got some questions.

1: Raspberry Pi - Does it matter which one I buy? Does anyone have any recommendations? the cheaper the better but hiding my location is priority (and ease of access, because as my title suggests, I’m not well versed in this subject area).

Can someone explain the concept and reason for the raspberry pi to me like I’m 5?

From what I can gather the VPN runs off it, so it stays at home while I am not there, and that is how my location will be shown as my home, is that correct?

If I don’t already sound uneducated in this area, I will now… This is where you really need to explain it like I’m 5 because everything I see online is too complicated and I need to understand the basics first. The Raspberry Pi’s that I can see online just look like a little panel, no screen or anything. How do I set anything up on it? what do I plug it into or download to run the VPN off it? Do I need to do some kind of coding to work it? (fortunately my brother is a computer coder so I can get him to help out if so)

2: WireGuard vs Open VPN-

Based off what I have researched WireGuard seems to be the best VPN particularly for speed. However, my priority is my location not being leaked. Anyone have any recommendations WireGuard vs OpenVPN?

3- I will be working from a work laptop which runs its own VPN which I have to connect to in order to access certain systems. If I use Raspberry Pi and GLiNet Router while simultaneously running the work laptops VPN…Will this work? Will it effect my ability to access these work systems?

4- My work laptop won’t allow me to hide my location on the laptop settings. It says ‘this system is managed by an administrator’. I have disconnected all bluetooth, radios, etc. If I follow Chris’s VPN tutorial and set up the server, client, router, the kill switch, etc, will this override the fact that the laptop location settings are stuck on ón’?

Thanks in advance, and I apologise again for adding another VPN question to digital nomads!