You can learn more about 3D Text and Text Meshes in the Unity online manual at http://docs.unity3d.com/Manual/class-TextMesh.html.
An alternative way of achieving perspective text like this would be to use a Canvas with the World Space render mode.
You can learn more about 3D Text and Text Meshes in the Unity online manual at http://docs.unity3d.com/Manual/class-TextMesh.html.