Apple iPad is amazing device and offers internet, mail, maps and much more, so you must have a WiFi network to fully enjoy this amazing device. If you have WiFi network then lets see how to connect WiFi on your iPad.
Tap on Settings > Wi-Fi and verify that the WiFi is ON or OFF. Tap on the ON/OFF icon to turn WiFi ON.
All available WiFi networks will appears under “Choose a Network”, networks with (padlock) icon shows that this is security enabled network and (Signals) icon shows the strength of WiFi networks singles.
Tap on the WiFi network that you want to use. If WiFi network is security enabled then you have to provide security key for it, after entering the correct key for security enabled WiFi networks you will be able to connect your iPad to wireless networks.
If you still unable to connect to the WiFi network than WiFi network may have Mac Filtering enabled as well (you may need iPad mac address). This is another level of security that to protect the wireless network from unauthorized devices. So to solve this contact to your network administrator and ask to add your iPad mac address.
If you successfully setup you WiFi settings and want to download some application from iTunes store then you need a iTunes store account see how to create free iTunes store account