Dev doodles, cartoons or illustrations whatever you call them; are a great way to explain coding/technical concepts which might seem complex otherwise.
Here's one from Una Kravets that I really liked:
Do you have any such favorite Dev doodles? Share em here! ๐
I like codecartoons for these things, they post doodles and sketches to explain web concepts.
Here's one on Virtual DOM
Git vs GitHub, beginners tend to get confuse one for the other..

Git pyramid. Finally issue fixed.
Sai Kishore Komanduri
Engineering an eGovernance Product | Hashnode Alumnus | I love pixel art
Julia Evans makes these awesome hand-written notes whose content varies from lucid elucidation of technical topics to pro-life tips.
One more, for getting your bash on ๐ค