There's https://jj-for-everyone.github.io/

> This is a tutorial for the Jujutsu version control system. It requires no previous experience with Git or any other version control system.

> At the time of writing, most Jujutsu tutorials are targeted at experienced Git users, teaching them how to transfer their existing Git skills over to Jujutsu. This tutorial is my attempt to fill the void of beginner learning material for Jujutsu.

Exactly what I was looking for, thank you!