I needed to open the user manual/documentation link many times while watching the videos for more information or to clarify things that were said in the video lessons.
Maybe there is a link somewhere that it is located in IU, but I'm not sure it's placed in a location that makes it easy for users of IU to find.
It is obviously very easy to just google and locate the manual/documentation, but for new users, they may not know about it till 50% done with IU!
Love the courses, they're EXTREMELY well done.