More Settings on Your Kindle Fire HD
When you tap the Parental Controls setting, you’re first presented with the option of turning the controls on. Tap to turn them on, enter and confirm a password, and then tap Finish. In the following screen, tap to unblock the Web Browser or E-Mail, Contacts, and Calendars settings.
You can also tap to password protect purchases or video playback. If you want to allow or block certain types of content, tap Block and Unblock Content Types and then tap the content you want to block, such as Music, Video, or Apps and Games.