Infopath to SharePoint list to fill PDF

Using this tutorial:
http://www.sharepointjohn.com/sharepoint-2010-fill-out-and-flatten-pdf-forms-with-itextsharp/

I will be making a test to take input from a user and writing the data to a fillable PDF.  The next level of customization I want to try is taking that data from an InfoPath form.  I can't seem to find a tutorial for it.  Once I have the tutorial, I should be able to figure out the rest.

This is one of the easier questions as it's simply finding me a tutorial, not fixing an issue I'm having.

Here's the end-state:
Make an InfoPath that collects data into a list.  Upon hitting the submit button, start a workflow (trigger: any new item) that will kick off the custom C# webpart and take the data from the custom list and fill out the fillable PDF with the data submitted to the list.

The way this Tutorial is structured (above link) is it makes the ascx page the submitting page, and you can make fields appear to the user to fill out. (Step 9)