new to everything

I am trying to figure out a CMS and was drawn towards grocery/CI. I went through the tutorials just fine but they use things like function _example_output which I think is in example.php. Maybe some other stuff. As I try to make my own DB and such, the examples make calls to those things but they are never discussed in the tutorials, they just call it. Is there a tutorial that starts from scratch and builds something useable?


This one is called the simplest but its calling another script. what if I wanted to use it for say cars?

function offices()
{
$output = $this->grocery_crud->render();

$this->_example_output($output);
}

Do I need to wrap it in anything? where do I save the file. How do I call it from a browser?