Connect iPod touch to the Internet
Connect your iPod touch to the Internet by using an available Wi-Fi network.
Connect iPod touch to a Wi-Fi network
Go to Settings
> Wi-Fi, then turn on Wi-Fi.Tap one of the following:
A network: Enter the password, if required.
Other: Joins a hidden network. Enter the name of the hidden network, security type, and password.
If 
appears at the top of the screen, iPod touch is connected to a Wi-Fi network. (To verify this, open Safari to view a webpage.) iPod touch reconnects when you return to the same location.
When you need an Internet connection, iPod touch does the following, in order, until the connection is made:
Tries to connect to the most recently used available Wi-Fi network
Shows a list of Wi-Fi networks in range and connects to the one you choose