There is a page attribute 'hide from navigation'. There is also an add-on that hides a page and all its children from navigation.

eerr....sorry but I am VERY new to site building....how can I get there-page attribute 'hide from navigation'???

Go into edit mode on the About page.
Click Properties
Click "Custom Attributes"
Look for "Exclude from Nav" and "Exclude from Page List" on that tab. If they don't appear, use the drop down list at the top to add them.
Check the checkboxes for each
Save the properties
Publish your changes by exiting edit mode.

This will effectively hide the page from the navigation - it will still appear in the site search - there are other attributes called "Exclude From Search Index" and "Exclude from Sitemap" that you should add if you want to really hide it.

Also keep in mind that it *could* still appear in Google. But the above will probably meet your needs - I'm assuming you just don't have the content ready and you'll unhide it eventually... correct?

You could also adjust the permission of a page so that a user not logged in can not see the page.

I tend to set that and then exclude from nav and the page list,

if it appears in google and someone tries to visit the page they will be asked to login

Thanks everybody, great help!