The belaying technique of the GriGri2 is similar to the previous edition. Below is a video made by Petzl of the correct way to use the device.
Petzl also release a warning about a number of their products that are being counterfeited. These knockoffs have less than the reliable amount of strength and need to be avoided. For more information Check out the Petzl Warning.
Stop by your nearest Touchstone gym and pick up some great new Petzl products!