[REQ] Add a better setup guide for beginners

[godalming123]

Please state which guide your request refers to. Name or link will do

Describe the solution you'd like Integrate my notes on how to setup a server so that it can be accessed from outside it's WiFi network securely.

Additional context Here are my notes: Server setup.md

[godalming123]

I've just finished setting up this guide, which you could also use to add a better set-up guide.

[justsem]

@godalming123 Just leaving this message so you know I've at least seen your request. I'll get back to you on this, time is a bit of a constraint at the moment. You're also welcome to open a pull request if you fancy so :)