First, charge your Kite from EE using the mains charger that's supplied with the device.
Once your Kite is charged you can turn it on by simply pressing the button down and holding it for a few seconds. Then follow the instructions on the Keep Me Card to get online.
You'll find your 4GEE WiFi network name and WiFi password on the Keep Me Card - but if you don't have the card, you can also get this information by pressing the button on the device just once.
Use the screen icons to see which network you're connected to: 4G, 3G+, 3G or 2G.