First login into your account using the username and password you signed up with. Once you've done this you should be in "your profile" screen. You should see two rows of green tabs accross the top of the screen. The first row has "edit:" on the left side and following are the tabs with "Place", "People", and "Photos" on them. By choosing any of these tabs you will have access to the information others see. You can edit anything that your originally put into the site. Make sure that after you've made all your change you click on the "Save Changes" button (gray and usually halfway down the page.)