To Installing Linux on a Virtual Machine, first let's explain what virtual machine software, where to download and how to install on our team.
The correct name is " virtualization software "and in simple terms it is an application that you install on your computer that allows users to "create "machines "virtual" who behave as if they were real , i.e. have memory, disk , network devices , well ... a virtual computer inside a real computer ... yes , it sounds like the movie Matrix 
But the point is that once we have a virtual machine, we can install within it a complete operating system thinks it is running on a real PC, so we can interact and play with it whatever we want without affecting our real operating system or our data!
But surely sounds complicated but is actually very easy to install virtualization software and several of them available in the market, both open and proprietary, with or without cost. Let's talk about two of them: VmWare and Virtual Box.
VmWare is a company that develops software mainly oriented towards the topic of virtualization and has several products, including VMware Server, ESXi , Workstation, Player, etc. Professionally I have tried several of their products and am very good and both like ESXi Server version can be downloaded for free.
Virtual Box is virtualization software should be free but also is open source. In the case of Virtual Box but has fewer years in the middle that VmWare and that makes it less commercially mature , it is quite suitable for test environments because it is very light and very easy to install and manage. So for this example we will use Virtual Box.
