Insert your Car WiFi device into the adapter that's supplied and plug it into your car's 12v power socket (cigarette lighter).
Now wait for the network light at the bottom of the device to turn on and simply follow the instructions on the Keep Me Card to get online.
Your WiFi password is on your Keep Me Card. You can also find it by removing the cover of the Car WiFi device - it's on the inside of the back cover.
Use the signal indicator to see which network you're connected to. You need a light blue light indicating 3G plus/4G or a dark blue light indicating 3G for your Car WiFi to work. If you only have a green light for 2G, you won't be able to get a connection.