This blue screen is where you go to add or edit your sermons. You can click "New" (below) to add a new sermon or you can import your sermons from Youtube by clicking "import" button from the "playlists" link (above). To edit a sermon, click the edit icon for that sermon.
Once you have some sermons in the database, click the "public" option and you can choose what information to display, filter options, theme settings, layout, etc. from the 3 icons on the right. Click the "view page" button to see what the public will see. When you are happy with your settings, click the "copy code" button and put that code on your webpage to display your sermons.