Comment by Comkid

I definitely agree the articles related to bootloaders can be very hard to read

If you want to use GRUB and UEFI, my recommendation is follow the headings up until the end of Installation

https://wiki.archlinux.org/index.php/GRUB#UEFI_systems

Then you just need to generate the config

https://wiki.archlinux.org/index.php/GRUB#Generate_the_main_...

The partition you're referring to is explained here

https://wiki.archlinux.org/index.php/EFI_System_Partition