1. open the page properties of a previously created page, which contains a subpage. Under the Appearance tab, assign: "Default page redesign with subpage teaser". Display the page in the frontend.
You are in the self-study and want to go to the training start page, then click on TYPO3 in the self-study for beginners part 2.
You are currently in self-training, then click Teaser to continue.