Question about submission form to database

I'm pretty new at CodeIgniter. I'm now wanting to create my first submission form to my MySQL database. My database settings are correct in the database.php in the config folder. I know that I need a view page, a controller page and a model page for this task, but I need to see some samples that I can use and test.  I found some sample view, controller and model code on this page but I'm getting an error message on my test view page. Below is line 10 in the code. Any ideas what's happening? Or do you know any other places where I can copy the view, controller and model code to try to replicate this on my own site for practice?

PHP Code:

<?php echo form_open('insert_ctrl'); ?>