VirtualBox is a powerful virtualization software from Oracle. You can try out and use Operating systems virtually on your computer without installing the Operating system at the boot level. It is great for playing around with various Operating systems and especially suitable if you want to have a burner throwaway OS which you can easily dispose of (delete) without affecting your hard disks or risking data corruption or loss. VirtualBox is free, open source and well tested and supported for use in home, small business, and enterprise. This book gives a clear, illustrated flow to install, open and use VirtualBox on Windows.