Sure, you can dig around in the ebook pre-loaded to figure it out, but here's a collection of things I wanted to know right away and had to figure out.
Step 1: Change the volume
That's great, but no volume buttons? Nope, it's stuck in the settings menu. To get to those, tap the little gear on top. Now you can change the volume by selecting "Volume" and sliding the volume control.
Step 2: Locking the screen
OK, fine, that makes sense. Still annoyed with the lack of volume controls.
Other controls in there do what you'd expect as well.