[solved] How to get the page called “Congratulations”?

my first try with Typo3 (10.4.10)
How I get this usual “Root page”?

Or how can I start to from were my Typo3 page tree stands?

Thank you.

EDIT: It seems my questions is connected to “Introduction Package”?

Now have the (root) page “Congratulations”, …

Can you tell us how to solve it? Would be nice for others having the same issue.