You most probably want to submit your home page (e.g. http://www.yourwebsite.com) or the page you want to promote (e.g. http://www.yourwebsite.com/article-about-something).
Now go to your dashboard and manage your website(s) and check how many activities (e.g. tweet, like, share, etc.) you've got.
Important Note: It may take hours to get activities. So keep coming back to your dashboard to check what did you get.