If i were to buy windows 10 home editor (from Play Asia), since it is digital can i put it on a flash drive and plug it up to the PC i am building, will it work, like it was a physical copy.
If it doesn't work, just download the Windows 10 media creation tool and use it to make a win 10 installer on USB, and use that. Bonus is this USB is created as a bootable USB by the program.
It should be the same. Provided you have a licence key, you can use any installer.