Your website should now be located at zwoodle.com/yoursitename.
For example, http://zwoodle.com/lilysnaturals.
By default, there should be a widget in the sidebar of your homepage that says META. Beneath that, you should see a “site admin” or “login” link. The direct link, which you might want to take note of, will be zwoodle.com/yoursitename/wp-admin. Just log in with the username and password that you selected. 🙂