The easiest method is to start downloading from the Download Windows 8 Consumer Preview page (http://www.forumswindows8.com/windows-8-download/). Once the download has completed, you have a couple of options:


Run the Windows 8 Consumer Preview Setup program from the PC where you want to install the preview. (Setup checks to see if your PC is running a 32-bit or 64-bit version of Windows and provides you with the correct download.)
Run the Windows 8 Consumer Preview Setup program and use the built-in tools for converting an ISO image into installation media, such as a DVD or USB bootable flash drive (requires Windows Vista, Windows 7, or Windows Developer Preview). You can then use this media to install the preview on another partition, virtual machine, or another PC.


If you don't want to use the Windows 8 Consumer Preview Setup program, you can download an ISO image and use it to create a bootable DVD or USB flash drive to install Windows 8 Consumer Preview.

Learn more about how to install Windows 8 Customer Preview here (http://windows.microsoft.com/en-US/windows-8/faq#section_1).