Publishing Sites

New to wordpress and need some help.

I using using *all* of the default settings, having opened my account last night. The only setting i have changed is the theme, which i “saved and published” on the theme page. When i view the page preview it looks fine, however, when i view the the public site, only the default wp theme is shown.

I have trawled the wp help and support pages to no avail.

I would appreciate some practical advice.

Thanks in advance.