Within the core Joomla! framework itself, there are a number of useful modules that can be enabled, without the need to download any third-party files.
To access any of these modules, go to the Module Manager using the Extensions | Modules links in the top menu. There you will see the full list of modules installed within the site. Select the module you want to use by clicking the link in the Title column.
Following is a brief outline of what some of these core modules can do for you on your site.
You can randomly display new articles, either one at a time, or a fixed number of them within a module position. Enable the module and start applying the details you require, as you have with the other modules that we have enabled ...