I actually found this article a bit confusing to read. I suppose they are "notes" but I found myself having to reread stuff a few times and it wasn't organized in a particularly clear way.
Here are some notes I had:
This is a very weird sentence:
> In the 1980s, they developed a minimalist approach and created a wonderful Operator Training Manual for the IBM Displaywriter, imagine having to introduce someone to using a word processor for the first time.
There is also a misspelling in "the four principals of minimalist instruction".
In that same section it is confusing to bullet point the four principles but include a summary of the principle at the end of the bullet point. This makes it hard to skim. (It's also self-referential, which the previous section recommends against.)