Getting Started Check List
During the installation of the package, the Main Panel is started and it automatically configures and localizes your setup (firstrun configuration). At the end of that run, this pre-flight-check-list pops.
You can also start the checklist anytime again with the  "Getting Started" button,

The checklist guides you through the final preparations of your setup. As you work down the list, the flags turn green.

Once all flags are green, you are ready to burn your first CD.