The worksheet form stores the submitted email address and the time of the request in a private storage bucket. The address is used to record the worksheet request. The form does not create an account or subscribe the address to a newsletter.
The worksheet is made available as a download after the request succeeds. No email is sent by this form.
The site does not add advertising trackers through the worksheet form. The hosting service processes requests to operate the site. Source Sans 3 is loaded from Google Fonts, which receives the browser request needed to serve that font.