Basic questions re: network configuration

Hello all. Completely new to HA. I am one of the many who are moving from Wink.

Anyway, as I prepare for Amazon to hopefully deliver my hardware, I already have (most likely dumb) questions. I’ve followed the instructions to create the USB config drive. I would like to set a static IP to the device.

I went to the website and wanted to know …

(1) Do you create a text file and call it “network.md” and then copy and paste the code in? If not, then what do I do?

(2) Do I need this code as the default code? What is the ID/UUID? Is that something standard or do I get that from my router or something?

[connection] 
id=my-network 
uuid=d55162b4-6152-4310-9312-8f4c54d86afa 
type=802-3-ethernet

[ipv4] 
method=auto

[ipv6] 
addr-gen-mode=stable-privacy 
method=auto

(3) If I don’t need the above code, is this sufficient enough, once I edit with my IP info?

[ipv4] 
method=manual 
address=192.168.1.111/24;192.168.1.1 
dns=8.8.8.8;8.8.4.4;