It's wonderful that you are considering using these materials — or some subset of them — in your introductory cybersecurity course!
The readings selected for this course are designed to be interesting, dynamic, and, whenever possible, narrative-driven. While the majority of readings are technical, their purpose is to simply provide students with the domain knowledge necessary to put their 'security mindsets' to good use. In other words, the technical readings play a supporting role to the narrative ones.
In addition to working through all the materials listed in the units, you may also find the following items beneficial to your own understanding:
- Dark Territory by Fred Kaplan
- Swiped by Adam Levin
- Spam Nation by Brian Krebs
I also recommend the following podcasts:
Cybersecurity, like computer technology generally, is an evolving field. While the security mindset lessons included in these materials will likely prove relevant far into the future, the technical materials will probably be obsolete after 8 to 10 years — if not sooner. If the year is 2030 and you're using these materials as they were written in 2019 — well, you probably shouldn't.
After every reading, a number of discussion questions are listed. On days when other technical lectures or discussions are not planned, you may consider leading an open-ended conversation using the prior lesson's readings as a starting point.
Unit 0 is entirely non-technical; its material, while a hugely important element of the course, does not involve any coding. This potentially leaves room for you to teach the basics of Python, for example, concurrently.