They are Movies, TV shows, Music, Music videos, TV, Radio, Add-ons, Pictures, Videos, Games, and Weather. On the left-hand side of your screen, you will see shortcuts for all the different media classes. We're going to explain everything, but let's get some basics out of the way first. But there's no content there, no setup wizard, and no hint of how to use add-ons and repos.
Hopefully, you're now looking at Kodi's main interface.