I really appreciate you saying this, you have no idea how much it means to me.
I spent many evenings and weekends tweaking this asking myself "is this intuitive to someone whose only experience with this topic is everything prior in this post?"
It's important to me that every section is grounded only in all of the previous sections. One of my fundamental beliefs is that anyone can learn anything, provided they're presented the material in the right order.
Really effective as teaching material; kudos to the author!