A QRCode is a matrix barcode that is easily read by QR scanners which includes mobile phones with a camera and smartphones. The code consists of black images arranged in a square pattern on a white background. The information encoded can be text, URL or other data. When you use your QR scanner to read the "code" it will tell you what is being said in the "code" or even take you to the website that is embedded within the "code". Easier for you, no long URL's to type, easily go right to a website by taking a picture of an image!
As mentioned above you will use your smartphone to scan and read QR codes. You will need to download an app to scan and read the codes, if you do a simple Google search for "QR readers" you will receive many options, most are free, some you must pay for, but they all do basically the same thing. Here are a few sites and searches to get you started:
Once you have installed the QR reader app, launch the app and take a picture of the image ("code"), its that simple! The app goes to work reading the image to translate it. Your smartphone’s browser will open and and the information you want is on your screen weather it be the text or the URL which the image represents.
Have a QR Code Question Not Answered Here?
Need an even better explanation of QR codes? Want to know where they came from? Why they were started? This Wikipedia article should do the trick!
What is a QR Code?
and read the codes, if you do a simple 
