Did you know, you can take a picture of what’s on your screen? Press Shift and Command, then hit the number 3 to take a picture of your whole screen! If you want a picture of just a window, press Shift + Command + 4, then press the space bar, and your cursor will turn into a camera. Mouse over the window you want to take a picture of, then click your cursor.
Of course, all your screenshots will be stored on your desktop.