Creating a simple application that uses a database

[eluser]Unknown[/eluser]
I am working on creating an application using CodeIgniter (my first one).

The problem I am having is getting a grasp on how to create a form that would allow a user to enter some data and submit it to the database.

The app is going to be a niche job board web site that is going to allow employers post jobs for free. I am trying to keep it very simple and only create the basics.

My question is how can I create a form view that will allow someone to enter information hit submit and that data will be sent to the database.

I have been referencing the wiki and found this http://codeigniter.com/wiki/Add_Edit_Views/
It seems to be helpful, but I am having some trouble understanding how the form works with this. I'd like to know if there are any additional resources that would explain these concepts or show additional examples?

Thanks