So now that we've got our intro out of the way, let's start having some fun with layers. I am going to close this, and I don't want to save it. And let's go to File, Open, and I am going to go to the lesson files, Part 1, Lesson 4 and open up Hamburger.psd. I can go ahead and hit Open.

Yes folks, this is a beautiful hamburger, I have here to explain the concept of layers to really demonstrate how these work. Is it cheesy? Heck, yes it's cheesy, that's just the way I roll. So we had this awesome cheese burger to play around with here.

Now, when you look at the Layers Palette you will see that all of these different pieces of my hamburger are all on separate layers. If you are vegetarian, you can go ahead and delete this meat layer. And basically we have this Visibility icon here which is this eye that tells us that we are currently seeing this layer. If I were to poke this thing in the eye, then this layer is no longer visible. Is it deleted? No, it's not deleted, it's still here, it's just temporarily invisible. I can turn the layer's visibility back on by just hitting the Eye icon, here in the Layers Palette.

Now, I am going to turn off the visibility of all of these top layers by clicking the Eye icon and if I just click-and-hold and-drag down then all of those icons that I hit will be turned off as well. So now we are just looking at the bottom bun layer and the white Background layer.

Now notice, as I turn the visibility of these layers, that each layer obscures the view of the layers beneath it. This is critical to understanding the way layers work. So as I turn on the cheese layer, because the cheese layer is on top of the tomato, you can no longer see the tomato. But what we can do is change the stacking order of the layers. To determine what shows up and what doesn't. So I can grab the tomato layer just by clicking and holding and drag up and it's like I am hand-dragging something, and I could drag this line on top of the cheese layer, let go and now the tomato is on top of the cheese and we see that in our document window.

So feel free to go through this file and play around, reorder these layers, change the stacking order, just play with that and get familiar and comfortable with that, so that as you work with layers, you already have some practice in. There is quite a few layers here for beginner project so it's kind of good to get in and get your feet wet, move things around a little bit, just again, to get in a habit of knowing what to do.