Unity Tutorials - Essentials 02 - How to use the Hierarchy - Unity3DStudent.com
The Hierarchy, an alphabetically ordered hierarchy of the game objects in your scene.
Part of the http://www.Unity3Dstudent.com teaching program by Will Goldstone, author of Unity Game Development Essentials.
Learn Unity game engine in short modules that give you the skills you need abstracted from game scenarios to maximise your creativity and complete challenges based on these modules to test your skills.