Hi Elaine,
I am not even close to being in the same OL technical league as Sue is, but I can help you with this one. All your pages are actually live, however, you control who see's what by adding them to your navigation. If you don't want someone to see a page, when you create it, go into page properties and you'll want to leave the box next to "Show this page in navigation" unchecked. The only way someone can get to those pages is if you either put them in your navigation or you link to that page from somewhere else in your site. The thing that's really a bummer is when you have to work on your home page, and I have been there plenty of times, I think since December my site has had about 8 themes, but anyway, there is no way to deactivate your home page. Some good advice I have seen here is to put either an image or some sort of message on your home page and links or navigation to get your traffic to other areas of your site, while you create your new home page on another webpage. Once your new home page is complete do a complete cut and paste (control + c then control + v) when it's ready to go live.
Best of luck to you, I had absolutely 0 experience doing anything like this before and the fine folks here have been a huge help.
SQ
www.beadedinspirationsbysq.com