That example introduces a lot of visual clutter and inconsistency. I doubt anyone can make it from 1 to 24 and not feel exhausted.

Panel 4, "Deep dive into IOT" has an illustration of stick figure diving under water. I'm not sure the concept of "deep dive" requires the explanation.

https://raw.githubusercontent.com/microsoft/IoT-For-Beginner...

I thought the learning potential was more for the person who makes the sketchnote, rather than people reading docs.