Wordpress can be installed using Softaculous application installer from your cpanel interface.  Please follow the below steps to get started:

Login into your cPanel.
Click on WordPress icon:

Click the "Install Now" button:

On the next screen, make sure to select all the appropriate options.  If you want your WordPress install to work when going to the root of your domain(domain.com), please make sure to remove the 'wp' from the Install in field:

Once completed, click the "Install" button:

You have now successfully installed WordPress, get bloggin!

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