With the minimum pages populated you will most probably want to add your Own Pages next
Log in to your website
Go to the "Admin Section"
Click "Dashboard"
Click "Manage Site Content"
Click "My Pages"
Click "add new" at the bottom of the page
Enter information into "SEO Settings" and "Page Content" sections
The page should already be automatically populated with a 12 column wide section to give you a head start.