If you are running on OS X, then look under the Examples menu. View All. or a specific topic.
If you are running iOS, then it should have been saved to your device as "Welcome to MathStudio". If it's not there, then tap the Manual button and you have the list of examples there.
FYI, in the future it's a good idea to identify the device you are running on. In theory it will improve the signal to noise ratio.
Oh wait, it suddenly sunk in, your thread is Ask MathStudio, my mistake. Look for the ? in the upper right of your screen.