Hi Ed!
What a great idea to include a PDF in your course!
I have a few articles I'd like to send your way to better assist you as you are developing:
1. Storyline: How to Link to a Resource in the Course Player
This article walks you through the steps of attaching a file to your player so that you can also link to that same file from any slide in your course.
2. Storyline 360: Attaching Resources
This article explains the process of Adding Resources, Editing Resources, Reusing Resources in Other Projects, Showing/Hiding the Resources Tab and Changing the Name of the Resources Tab.
I hope this helps!