Oracle is currently offering free Oracle Cloud and Autonomous Database training and certifications. This amazing offer is available until May 15. https://www.oracle.com/corporate/blog/free-certifications-oracle-oci-autonomous-033020.html
There is no featured content to be displayed in the slider. To set up the slider, go to Appearance → Customize, and add a tag under Tag Name in the Featured Content section. The slideshow will then display all posts which are tagged with that keyword.