Sacha Chua has been doing a lot of sketch notes lately. One of her most recent contributions are two guides for learning Emacs keyboard shortcuts. These are, of course, aimed at n00bs but they are well done and worth passing on to anyone you know who is struggling to get started with Emacs.
Chua has lots of good advice for learning about Emacs. I particularly like her observation that it's a lifetime project. It tells the beginner that it's all right not to understand everything right away. Those of us who have been plugging away at learning Emacs for years can sympathize. On the other hand, it's actually nice that there's always something new to learn.
Update: nner → beginner