Click here to register for a Keychain.
Once you've registered, an email will be sent to your email address. You'll need to click the link in the email to verify your email address and then you'll need to enter and confirm the password for your Keychain.
If you receive a message to say that your email address has already been associated with a Keychain account, click here to reset your password.
Once you've created a Keychain, you'll need to link your individual account(s).