Yes, I made the videos a few years ago. This video series is mostly for beginners as it goes pretty slowly.
The exercises are open source and can be found here:
https://github.com/xorpd/asm_prog_ex
I think that more experienced developers can take the instruction set and bash through the exercises.
I think it’s created by the man himself - having been through it it’s a very thorough coverage of the basic instruction set without delving too much into the windows specifics (it uses FASM syntax from what I recall)
EDIT: Looks like it is. https://www.xorpd.net/pages/x86_adventures.html