how do you block internet access on an iPod touch?

go to settings general then restrictions turn of safari and installing apps

set pass code and thats u,

u need to turn off the install apps to stop a user from down loads a other app to use the internet

set a passcode to lock it

settings>general>restrictions

you can block explicit music, safari (the internet browser), youtube, itunes and installing apps.

You will have to restore it completely... Here are directions:

Follow these steps to place your iOS device into recovery mode. If your iOS device is already in recovery mode, you can proceed immediately to step 6.

1. Disconnect the USB cable from the iPhone, iPad, or iPod touch, but leave the other end of the cable connected to your computer's USB port.
2. Turn off the device: Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the device to turn off.

   If you cannot turn off the device using the slider, press and hold the Sleep/Wake and Home buttons at the same time. When the device turns off, release the Sleep/Wake and Home buttons.

3. While pressing and holding the Home button, reconnect the USB cable to the device. The device should turn on.
   Note: If you see the screen pictured below, let the device charge for at least ten minutes to ensure that the battery has some charge, and then start with step 2 again.
   
4. Continue holding the Home button until you see the "Connect to iTunes" screen. When this screen appears you can release the Home button:
   
5. If necessary, open iTunes. You should see the following "recovery mode" alert:
   
6. Use iTunes to restore the device.

If you don't know the passcode to the Restrictions, you'll have to restore the device to factory settings and then resync all the content.

http://support.apple.com/kb/HT1414

Regards.

if there no passcode set u should be able to set one,

if one has been set by the family member that had it first ask them they might know it

if they dont restore the ipod to factory settings via itunes restore tab when u plug it in to computer

then re sync ur apps music etc

or restore ipod via dfu mode