I cannot connect my IPOd Touch to the internet to download music . I need wi-fi connection. I already have internet service. What is wi-fi and how do I get it?

Fix the issue on your iPhone, iPad, or iPod touch If you can't connect to the iTunes Store on your iPhone, iPad, or iPod touch, make sure:

1. That your date, time, and time zone are correct. Tap Settings > General > Date & Time. Time Zone might list another city in your time zone.
2. That your iOS software is up to date. To check for updates, tap Settings > General > Software Update. You can also connect your iPhone, iPad, or iPod touch to iTunes and click Check for Updateon your device's Summary page.
3. To check that you're in range of a Wi-Fi router or base station. If you're using cellular service, make sure that cellular data is turned on from Settings > Cellular. If you're connected to cellular data, larger items might not download. You might need to connect to Wi-Fi to download apps, videos, and podcasts.
4. That you have an active Internet connection. For help with your connection, check your device's user guide.
5. To see if other devices, like portable computers, can connect to the Wi-Fi network and access the Internet.
6. To reset your Wi-Fi router by turning it off and then on again.

If there's still an issue, learn what to do if your device won't connect to a Wi-Fi network.

The iPod touch is not only a music player, but also your gateway to the world via the Internet. In order to connect to the iTunes music store and use the email and web-browsing features of your iPod touch, you must first connect to a wireless network.

Touch the "Settings" icon on the home screen of the iPod touch. The iPod does not require you to press down very hard to select an icon. Using your finger, lightly tap the application you want to activate it. Choose the Wi-Fi setting and turn it on. You may need to wait a moment while the device locates available networks. Select the wireless network you want to connect to. You may have more than one option based on your location. If you are prompted for a password, enter it and touch "Join." Opt to have your iPod alert you when there is a new network you can join. This can be useful if you are no longer in range of a network you have previously used. To receive these messages, turn on the "Ask to Join Networks" feature. Tell the iPod touch to "forget" a wireless network that you no longer want to use, so it will not automatically try to connect you. Under the Wi-Fi settings, tap the ">" button next to the network you want to delete and then touch "Forget this network." Expect that some wireless networks detected by your iPod touch will ask you to sign up for a fee-based service. If this is acceptable to you, open up the Safari application from the home screen. You will be taken to a website that explains the terms of service and accepts credit card payments for wireless Internet access.
When the iPod touch was introduced in 2007, it quickly became one of the best-selling portable music players on the market. What separated the iPod touch from its competitors was its ability to access the Internet through Wi-Fi networks. If you're ready to surf the web and send e-mail with your new iPod touch, it's easy to get connected. Just a few taps, and you'll be on your way.

Tap the "Settings" icon on your iPod touch's home screen. Tap the arrow on the far right of the "Wi-Fi" bar on the "Settings" screen. Move the slider on the "Wi-Fi" bar to the "On" position. Move the slider on the "Ask to Join Networks" bar to the "On" position if you wish to be notified before your iPod touch connects to a new network. Moving the slider to the "Off" position means you must select a Wi-Fi network manually before your iPod touch will connect. Press the "Home" button to return to your iPod touch's home screen. You will see the Wi-Fi icon appear in the top left corner of your screen with up to four bars illuminated to indicate that Wi-Fi is available and to show its signal strength. iPod touch Support
http://www.apple.com/support/ipodtouch/ and ios support http://www.apple.com/support/ios/apps/

Wi-Fi Functionality

1. Connects over the last Wi-Fi network you used that's available.
2. If no Wi-Fi networks you've used are available, iPod touch will scan for Wi-Fi networks and show a list of Wi-Fi networks in range. Tap a network and, if necessary, enter the password to join. Networks that require a password show a lock icon () next to them.
3. Option to manually enter your Wi-Fi network name/SSID (if the Wi-Fi network is configured not to broadcast or be displayed to the public). If necessary, enter the password to join.

When iPod touch is connected to a Wi-Fi network, the Wi-Fi icon () in the status bar at the top of the screen shows connection strength. The more bars you see, the stronger the connection.
Wi-Fi Settings

1. Turn Wi-Fi on or off.
   Choose Settings > Wi-Fi and turn Wi-Fi on or off.
2. Set iPod touch to ask if you want to join a new Wi-Fi network.
   When you are trying to access the Internet, by using Safari or YouTube for example, and you are not in range of a Wi-Fi network you have previously used, this option tells iPod touch to look for another network. iPod touch will display a list of all available Wi-Fi networks that you can choose from. Networks that require a password appear with a lock icon ().
   
   If "Ask to Join Networks" is turned off, you must manually join a network to connect to the Internet when a previously used network is unavailable.
   
   Choose Wi-Fi and turn "Ask to Join Networks" on or off. If you turn "Ask to Join Networks" off, you must join new networks manually.
3. Join a Wi-Fi network manually.
   Choose Wi-Fi, wait a moment as iPod touch detects networks in range, then choose a network. If necessary, enter a password and tap Join. Networks that require a password appear with a lock icon.
4. Make iPod touch forget a network, so that the device doesn't join it automatically. Choose Wi-Fi and tap the arrow () next to a network you've joined before. Then tap "Forget this Network."
5. Connect to a closed Wi-Fi network (an available Wi-Fi network that isn't shown in the list of scanned networks).
   Choose Wi-Fi, then tap Other and enter the network name. If the network requires a password, choose Security, tap the type of security the network uses, and enter the password. You must already know the network name, password, and security type to connect to a closed network. Some Wi-Fi networks may require you to enter or adjust additional settings, such as a client ID or static IP address. Ask the network administrator which settings to use.
6. Adjust settings to connect to a Wi-Fi network
   Choose Wi-Fi, then tap the arrow () next to a network.

how do you connect the internet to ipod touch?