Learning about your document can be done right from within the document window itself and some of the controls are actually hidden and I'm gonna show you some of the shortcut keys to get the most out of this window. So if the first thing you want to do to see all this information which includes, let me move this up a little bit the status bar is to go to the uh standard screen mode and of course you'll have the ability to see the entire document window itself. Now let's talk about the tools on the top of the window here. First of all we see that we have our standard buttons for our closing, maximizing, and resizing our document altogether. We also have down here in the opposite corner our resize handle and we can resize the document to scale it up as far that you know how it, how much space it takes up in our screen. Where we can also see up here in the title bar region is the name of the file and whenever you rename it that will change. And to the left of it we have this curious little icon here, what in the world does this icon do. Well this icon will allow you to see whether or not you saved your image or not. For example currently its not ghosted out but if I make a change for example I'll take the brush tool and I'll make a mark on my document, you'll notice that the document preview ghosted out. That means I have not saved it recently so I'm gonna go to file, I'm gonna choose save as and on my desktop I'll just save it as aaa, I'll click OK, and then it changed the name up here in my title bar as well it gives me a preview which is no longer ghosted out and it looks exactly like the artwork here. I can also see an at symbol which tells me which percentage I'm currently looking at my document in the document window. So you'll notice down here we are looking at it at 66.67 percent, which is indicated up here as well. So I can click and drag my mouse in this region, this text field, enter 100 percent and now I'm looking at the document at a 100 percent. Likewise I can also use the zoom tool to zoom in and change that number. And I can hold down the alt or option key to zoom out. OK so that number changes as well. Now what else can we find out about this document, well the cool thing is if I hold down the control key and I click right here in this align a preview window appears which tells me how big this image will appear on a printed sheet of paper. So this is the region of the blank paper that it will take up. Also if I hold down the alt or option I can find out the width, the height, the channels and the resolution. So once again those are some hidden commands in there. Now I can also see by default the document size as far as how big or how weighty this thing is as far as pixel dimension. Currently its 569.5 kilobytes, which is under a megabyte, if I click on this pop up arrow, I can find out what's going on with my version queue if I was working with a group of people, I could find out what the status was on the version queue, I can currently see the document size which is down there right now. I can see a document profile which shows me that it's in RGB. I can look at the document dimensions and it tells me this document is five inches by 7.5 inches at 72 pixels per inch or ppi. I can also look at the scratch sizes which tells me that out of the available 796 megs on my computer this document is taking up in the scratch disk 87.1 megabytes. The efficiency is kinda of interesting, what it does is it records how fast the last operation took to perform. So if I go ahead and do a quick squiggly like so, it will tell me the efficiency and let me know whether or not Photoshop is using the scratch disk or whether its working at full operation on the RAM that's in my computer. So you'll notice that the number did not go below a 100 percent which means that Photoshop is running at maximum efficiency on the RAM that I have in my computer. Let me undo that. Another cool thing that you can use, look at your timing and your efficiency of something is how the tool performs. For example the last operation took 1.8 seconds. When I did the little squiggle things, let me go ahead and do something else, I'm gonna go to my pencil tool and I'll be a little bit more elaborate so I'm just gonna take some time to draw this out and I'll wait a moment, and then I'll let go of the mouse and that took me 5.9 seconds ok. And once again if I go to efficiency its still at a hundred percent so Photoshop is still working on my RAM and not working on my scratch disk. And this is very helpful for people who are learning Photoshop and you want to keep a track of the name of the current tool and it tells me that I have the pencil selected. I have the uh move tool selected, pencil, I have blur, I have dodge and so on. So that's very helpful to keep your eye on when you are learning the application and you want to know what tool your working on. Likewise what you can do is hover mouse over a tool and just leave it there for a second and the tool will appear as well as the shortcut key in parenthesis. So that's the dodge tool and if I put my mouse over the move tool it tells me that if I press V I'll get the move tool. And last but not least if you want to uh work with your image in 32 bit mode what you can do is turn on the 32 bit exposure and that will allow you to work with your image in 32 bit mode as far as the preview is concerned. Once again the document window contains quite a bit of information that can come in quite handy as you work on your documents.