We looked at the Project Panel in the previous part of our Introducing Unity tutorial, now in Part 5, we will be looking at the Hierarchy Panel.
 

So you have read a little on what Unity is and had a brief guide to the editor layout. In Part 3 of our Introducing Unity tutorial we will be taking a more indepth look at the Scene Panel.
 

比较完整的unity3d介绍文章，推荐新手阅读！