Congrats, your site is configured and ready to upload and customzie!
This page is the default.html page, located inside of your 'public_html' folder on your account. You will need to delete this file, or add a file called 'index.html' (which will override this one) to your public_html directory.
If you're uploading your own custom website files and scripts via FTP, make sure that you upload all of the files into the 'public_html' directory! This where they must be uploaded in order to be accessible via your domain name.
If you would like to set up your site via the free website builder scripts (such as WordPress), you can login to your cPanel account and access the 'Softcaculous App Installer' section (near the bottom) and access WordPress (among others) from there.