The Importance of Layers

Please follow the tutorial to create your own image again using your name as opposed to "wegraphics" also answer the following questions. The questions should be answered in a word document. Good Luck! Click here for the tutorial.

Questions:

Why does the author claim that "layers" are considered a foundational unit for Photoshop?
Why is the content of the text important?
What is the purpose of the text?
In Photoshop Layers have an hierarchy, how is this displayed on the Photoshop interface?
How do you unlock a layer in Photoshop?
According to the author "layers" offer what to Graphic Designers?
What parts did you understand? What can you do to aide in your comprehension?
What software will you use to create this document?
Who is the intended audience?