Hi AstonJ,
Thanks for reaching out! It appears I cannot edit the first post so I was going to wait until I had my thoughts collected to ask for your assistance with this. Please feel free to modify as you see fit 
No prerequisites are required, students may start with the crash course on the website and from there ProductiveProgrammer.com provides both an all encompassing path so students can stick to just one resource (our site) while also providing additional recommendations of where students can expand their understanding in documentations and other guides if they want to go further on a topic outside of our courses. But the true secret and beauty is the feedback loop.. Students help drive the future direction of courses and lessons by providing feedback, engagement, and requests for awesome future lessons in the topics they are interested in.
Everyone can benefit from the Crash Course & all Students who join for paid access can also access the Phoenix LiveView lessons for the Chat App, Medium.com like Clone, and Ecto & Database Course. I also have a productivity course which has been a hit to boost personal and professional productivity.
, $197 is a bit too much for me.