Elementary operating system is a very pretty, high speed, lightweight Linux operating system for 32 and 64-bit x86 computers. This OS is built on an Ubuntu core. To install elementary OS we need to download the ISO file from its website i.e. https://elementary.io/
If you scroll down on the website you will see like below, to download click on Download button as shown below:
Now you can choose 32 0r 64 bit ISO file:
Click on New button to start:
Fill the information on the system name, username and password [We should use a proper password but I am using a very simple one as this is just for a demo]. The below screen will show the progress of the installation that is done.
Reference taken from one of article that was published on Experts-Exchange.