I often talk & write on web performance. I seek to improve by using graphics (& may be videos later) to explain better. So, if you have come across folks / resources on the internet that put visuals to good use to do so, please share.

For reference - some that I like:

Julia Evans (ex - https://jvns.ca/tcpdump-zine.pdf) Akamai Video Series (ex - https://www.youtube.com/watch?v=zAxSE1M4yKE)