To set up Wi-Fi and connect to your wireless network on your Android device, you will need to launch the 'Settings' app. The process in locating the Settings app can be slightly different depending on the OS Version your device is running and whether or not the 'Email' app has been saved or moved to the device's homescreen. In either case, the below two methods can be used, regardless of the OS version to locate and launch the 'Settings' app.
Note: If you wish to forget a saved network, tap the network name from the list and select 'Forget'. Screenshots above depict the Galaxy Tab, 4.0.3 Icecream Sandwich OS.