Windows 10, Windows 10, Windows 10
Windows 10, Windows 10, Windows 10
Yes, the key will be requested during setup. Just press skip if you've already upgraded for Windows 7. Don't alter the language or region settings—those seem to cause issues. You can adjust them later and log in using your Hotmail account. It appears the binding is linked to your email.
On the same setup tool. It will prompt you about USB installation or direct installation on the existing system. http://www.microsoft.com/en-us/software-.../windows10
Yes, during setup you'll see choices like upgrading or performing a fresh installation.