First charge your Osprey from EE using the power supply that's supplied with the device.
Once it's charged you can turn it on by pressing the power button down. Then follow the instructions on the Keep Me Card to get online.
You'll find the WiFi password on the Keep Me Card - but if you don't have the card, it's also on the back of the cover where the SIM goes and you can also get this information by pressing down the button on the device.
The power button and WPS button are together on the side of the Osprey - you need to make sure the press the power button down to switch it on. WPS means WiFi Protected Setup which allows you to connect easily to your WiFi.
Use the screen icons to see which network you're connected to: 4G, 3G plus, 3G or 2G.