Hi,
what do you mean about link you google account? Do you want receive the emails in your google email? If you have chosen the option ‘WordPress database’, you can export the emails subscribed with the button ‘export emails’ at the bottom of the page. The emails are exported in a csv file.
About google analytics code, you have to type the code in the option ‘Google Analytics’, in the page ‘options’, at the bottom of the page.
Regards