If you haven't already, open up a web browser (e.g. Chrome, Firefox) and type in your account name followed by .screenstepslive.com.
Clicking the Admin link will take you to the first site in your account.
Bookmark this page
Whenever you want to update ScreenSteps content or manage your knowledge base, you will come to this page. So go ahead and bookmark it so that it's easier to get to next time.