This is the C/C++ Perspective, notice the C/C++ Projects view on the left, and the Outline view has moved to the right. The center area is reserved for your Edit view.
There may be other views available in your workbench such as the Navigator or Make Targets views. You can close them if you wish; they will not be used in this tutorial. You can open them again later by clicking Window > Show View and reselecting them.