Android sdk root folder

What should be in the Android sdk root folder? When I try to build for Android it won't select any Android folders from program files? Can i test the accelerometer functions on my phone directly in Unity?

You should have installed the Android SDK somewhere. That's the root of that, mine happens to be Documents/android-sdk-mac_86, yours may be different. I don't know about the accelerometers, but I would hope so (works on iPhone)