To join fan club, you need a BBC Account. Click here to register and grab a grown up to help you. You'll need their permission to sign up. Once you've done that, you can log in!
Once you are logged in, all you need to do to join the Fan Club is to say hello in the comments at the bottom of this page.
For more info on the Blue Peter Fan Club and Live Chats, take a look at our Fan Club guide.