It seems as he is a beginner and doesnt want to show to visitors his editing errors ?
If it is so case then he can before first Item Apply/Save put Item, Access level as "Special".
Then he can simply log in at the front as Superuser and nobody besides him will see Item, not even Authors, Editors, etc...
When he is satisfied how Item looks he put it back to "Public" ans Save.
If he has not Login module at the front find him at Google direct login link for Joomla (front).
I am doing this way all the time. Less stress and you have more time to finish your article, you never put any Item with editing errors online, but you can always see how it looks at the front.