3. I would like my site to be private, visible only to myself and users I choose
– Select this option to create a private blog. If you want others to be able to view your private blog (and add comments, if you’ve enabled them) you’ll need to invite them to be a viewer.
If you don’t have a username account at WordPress.ORG click http://wordpress.org/support/ and register one on the top right hand corner of the page that opens, so you can post to the support forums there and receive advice from WordPress.ORG bloggers.