You can edit this layout in the following files:
app/views/layouts/default.thtmlapp/views/home/index.thtmlhtml/styles/front.css
For the dynamic stuff, head to:
app/controllers/home_controller.php
Add your database models by subclassing:
app/models/AppModel.php
And configure your application with:
app/config/core.phpapp/config/database.phpapp/config/emails.phpapp/config/paths.phpapp/config/routes.php