There are three main ways to create the content for your website using Plesk. Each has its advantages and disadvantages.
1. Use Sitejet Builder
The Sitejet Builder tool that comes bundled with Plesk allows you to create websites using a web interface. You can use one of the provided templates to create a professional-looking website in a matter of minutes.
2. Use a Content Management System (CMS)
Content Management Systems (CMS for short) are third-party applications like WordPress, Joomla, or Drupal that enable you to create and maintain a website. They are highly versatile, and come with a large number of optional add-ons. CMS offer greater degree of customization as compared to Sitejet Builder, but demand more technical knowledge from the user.
3. Employ a Professional Designer and Upload Content
This option guarantees you will get exactly what you want. However, it is also the most expensive one. The web designer will provide you with the files you will need to upload to your hosting account. You can do it using FTP or the Plesk File Manager.