Basically the breadcrumbs module is alreads published on the right position if you install the Joomla sample content during the Joomla installation.
If it is not the case:
Go to your module manager (click on "extensions->module manager in your backend), select the breadcrumbs module from the list and hit the "edit" button in the upper right corner. Make sure that the module is publsihed on all pages on posiiton breadcrumbsload.
See screenshot below for correct settings:
If nothing helps: Wait till your site is online and than send me a super admin account.