If you have been waiting to install Windows 8 on your computer, now is the right time. You can download Windows 8 from this link and start the installation.
You will need the Windows 8 product key to complete the installation though. The Windows 8 product key for the consumer preview version of Windows is:
Use this to finish the installation of Windows 8 and start using the best ever operating system from Microsoft.
Note that sometimes when you try to install Windows 8 on your computer, the setup will not ask for Windows 8 product key. So, don’t worry if your installation process completes without entering the Windows 8 product key.
Also note that the above product key will only work for the consumer preview of Windows 8. If you try this Windows 8 product key on the full commercial version of Windows 8, then it will not work.