This is a great video on how to create a QR code with QRStuff.com.
//www.youtube-nocookie.com/embed/dRcEXEHwK-c?rel=0
And here’s a great one for the QR Scavenger Hunt Creator on Classtools.net.
//www.youtube-nocookie.com/embed/hobGSzFvuhw?rel=0
Great Video on Creating a QR Code
Teaching with Technology 