Choose Google Calendars Synced to iPod Touch

http://www.google.com/support/mobile/bin/answer.py?answer=139206

Mail, Calendar, & Contacts: Choosing Which Calendars to Sync

Google Sync allows you to choose up to 25 Calendars with the Calendar app on your Apple device.

To select which calendars to sync to your Apple device, follow the steps below:

  1. Open the Safari browser on your device and go to http://m.google.com/sync.
  2. Sign in with your account and select your device from the list of devices you've set up for Google Sync.
  3. Bookmark this page so you can return to it easily.

If you use Google Apps, follow these steps:

  1. Open the Safari browser on your phone and go to http://m.google.com
  2. Click on Google Apps user? at the bottom of the screen.
  3. Enter your domain name (e.g., YourDomain.com).
  4. Click the Sync icon in your domain area (this section has a green background).
  5. Sign in if required.
  6. Select your device to configure Calendars.