Teresa,
Thank you for your business first of all. Let me see if I can help you out with your troubles.
Home Page Posts
It looks like only one post is published in the category you have selected for your home page (the updates category). When I view category directly at http://powerfulparentsllc.org/?cat=4, it’s showing one post there too. So I’d check to make sure that both posts are in the same category and that both are set to published. If they’re both in that category and both are published, let me know.
Home Page Link
Many of my themes have a built in home page that’s generated from a template file called home.php. That actually means you don’t have to actually create a page called “home” like you sometimes have to do with other themes.
To add a menu item for the default home page, here’s what to do. Go to the navigation builder (appearance > menu). In the left hand column look for the pages section. Click the “View All” link and WordPress will add a “home” link that you can add. Place that in your navigation and you should have a link that works as expected.
If you have any other trouble, please feel free to ask.
Thanks again,
Bill