The tool will automatically download the ISO that you can burn or download, and extract the ISO for a bootable USB installation drive. If you want to burn it to USB file, you need at least 6 GB drive or bigger to do so. The N stands for not with Media Player, created for the EU and Swiss market. You cannot get an ISO that will fit them all.
Microsoft offers ISO / updates for Windows 10 Home, Windows 10 Home N, Windows 10 Home single language, Windows 10 Pro and Windows 10 Pro N. Make sure to check the system requirements for Windows 10 ISO before you start the instalation. You can select your language, architecture, whether you use 32-bit or 64-bit hardware, and choose the Windows edition you need. The provided links will offer allow you to download something called MediaCreationTool, and then the tool offers you either to upgrade your windows or create a ISO file. MDT is used to build a reference image from the ISO of Windows 10. In case you have more than one PC, and in case you don’t want to wait for the automatic upgrade, you can get the Windows 10 ISO file and do either an upgrade or a clean installation on your PC. A virtual machine is created for Windows Server Update Services (WSUS) to pull down. After releasing the full and final version of Windows 10 RTM OEM operating system for computers and laptops, Microsoft Windows Developers are still working hard to include more and more useful features and functions to the newest Windows 10 through regular updates via Windows Insider Preview program available for developers and general public users worldwide.