Useful for if you have game files on your computer and wish to install them without a shop.
Run NUT on your computer and launch Tinfoil on your switch. Plug your switch into your computer.
Run the driver installer so that NUT reports the device as connected in the top right.
To install games either scan the folder they are located in with nut to make them appear in the USB section of file browser, or using USBFS in file browser browse to the folder they are in.
Might add images later to this. Thanks Ibcap for the writeup.