So If you want to install Linux there are 2 ways to do that
First way is to download the Linux distribution you want and burn it on a DVD or USB stick and boot your machine with it and complete the installation process
The second way is to install it virtually on a virtual machine like VirtualBox or VMware and continue working on your windows or mac system without rebooting so your Linux system will be contained in a window you can minimize it and continue working on your system…