" Appreciate this guy taking the time this guy is taking to put these together."
Like I said, I appreciate the enthusiasm. The issue of learning online is the same one that dogs just about all learning via Youtube or most any other online resources--you mostly get what you pay for. This isn't the first online bonsai tutorial I've seen that doesn't so much teach bonsai as show you how to do things almost exactly wrong.
The best way to learn bonsai is to find a local instructor, grower or hobbyist who knows what they are doing and has been doing it consistently for more than a couple of years--bonsai clubs are great sources for these people. Get them to show you IN PERSON how to do things. I guarantee you will learn more in five minutes with hands on instruction than you will learn in 15 hours of watching videos.
By the way, bonsai soils do vary by location, but it's more due to what kinds of soil components are available and affordable there, rather than specific soil requirements (although that does play a part).
Also, repotting procedures are not set in stone. They can vary tremendously depending on age, species and overall condition and health of the plant.