Launch Ovation by double-clicking Ovation.exe. You will either find a shortcut on your desktop (if you chose to create one), or you can open Windows File Explorer and navigate to C:\ProgramFiles (x86)\Ovation (if you chose to install to the default location).
Ovation always launches to the Title Area. This is a white room that displays the Ovation text and logo. While this area is still visible, you should move to the center of your play area and face your desired starting direction. Once ready, pull the trigger on one of your motion controllers.
You will now find yourself in Ovation's Backstage. Feel free to look around. In front of you is a lectern, some presentation tools, a menu, and a curtain. If you look down at your hands you will see virtual replicas of the motion controllers you are holding in your real-world hands. On one of the motion controllers are small text tips describing what the controller's buttons do.