The S Pen is the stylus that comes with the Samsung Galaxy Note. It can be used for things like taking notes, drawing doodles, and otherwise acting as a more precise version of your fingertip when using your phone.
These shortcuts are ones you'll definitely want to commit to memory as a Note user, especially since the S Pen does not interact with the capacitive navigation buttons near the bottom of the device.
Pop-up Memo app
Press and hold the S Pen button (on the side of the stylus), and tap once anywhere on the screen of the device. A note window will appear on top of your current activity so you can create a handwritten memo, doodle, or graph.
Press and hold the S Pen button, and tap and hold the S Pen on the screen. You'll hear a camera shutter sound go off, and then you'll have an opportunity to write on your screen capture with the S Pen. After that, you can save your changes and share the picture with a friend.
Press and hold the S Pen button, and drag the pen from the top of the screen to the bottom to get the same result as the Home button.
Press and hold the S Pen button, then drag the pen from bottom to top to get the same result as the Menu button.
Need to go back a page or two? Press and hold the S Pen button, then drag the pen from right to left and it'll act like the back button.
Now you'll have more ways to show off the S Pen that fits neatly into the edge of your Note.