Suppose you have windows or Linux operating system in your computer, now you wish to experience the other any operating system in your machine without any trouble or effect with present OS, So what you have to do, just download Vmware Player software with simple registration (free) or virtual box software and install it within your present OS, next within the virtual box or vmware player install the desired OS without hesitation.
It will not effect your work or present OS, through this way you can run multiple Operating System inside the present OS. Experience the Virtual Machine. You can work in multiple OS simultaneously without problem.