This tutorial will show you how to change the screen mode in Photoshop
This tutorial assumes you already have your picture open in Photoshop
1) Go to the View menu
2) Go to Screen Mode
3) Select a screen mode
4) You can also cycle through the screen modes by clicking this icon
5) You can hide the menu and toolbars by pressing the tab key
Your screen will be completely black with your picture centered in the middle. This last mode is especially helpful for presenting your photos
This is the end of the tutorial. You now know how to change the screen mode in Photoshop