1) You MUST have a valid Windows 8 license. When you buy it, you can chose to buy a version that comes on USB which is the easiest way.
2) If you have a valid retail or unused OEM license already, follow the instructions at http://windows.microsoft.com/en-us/windows-8/create-reset-refresh-media
1) You MUST have a valid Windows 8 license. When you buy it, you can chose to buy a version that comes on USB which is the easiest way.
2) If you have a valid retail or unused OEM license already, follow the instructions at http://windows.microsoft.com/en-us/windows-8/create-reset-refresh-media