I remember feeling like this years ago when I first was exposed to the Microsoft Windows MFC and the COM Object Model, I knew I had reached the end of my comfort zone with C++ programming. That same feeling is present with me now during this module of the Codecademy course.
Many times, I have taken some detours and watched a few YouTube videos to supplement the training. Generally, one source for training will have a few gaps that need to be filled by outside research no matter how comprehensive the course may seem at first. I am happy to do this and would encourage this for others. It keeps everything in perspective and interesting. A few videos every now and then helps ease the rigor of the course.
This is where I will focus when I start my own training programs. Creating about 1-2 support videos around this course would be beneficial. My specially is diagramming concepts. My objective would be to create a relationship matrix so that the student taking the course can visualize the connections between all the parts.
Chicken and Waffles.