How to Easy Install Kali on Mac & Windows Virtual Machine
Kali Quick Start on a Mac/Windows PC
The linked Tutorial shows you Visually & Step-by-Step How to Easily Give a Twist and Install Kali GNU/Linux on Mac and Microsoft Windows Computers.
Kali Linux is an Open Source Project that is Maintained and Funded by Offensive Security, a Provider of World-Class information Security Training and Penetration Testing services.
In addition to Kali Linux, Offensive Security also maintains the Exploit Database and the Free Ethical Hacking Course, Metasploit Unleashed.
Follow only the First, Step of the Guides on Creating the VM and after simply Run the Virtual Machine.
Then you can Enjoy for Free Kali Live Desktop! :)