My Emacs eye candy
Neat blog post about how someone configures their Emacs, which some fun and interesting things within.
What's New in Emacs: Last Decade Edition
Some folk use Emacs out of the box, and never realise just how much more it can do if you sprinkle some of the newer stuff over your configuration. This article does a good job of explaining some of those additions.
Elisp in replacement string
Something I've never really paid attention to, and it's actually quite a powerful feature: when doing search/repalce in Emacs you can replace with Elisp code (as in, Elisp code can provide the replacement).
What Emacs got right, or how I wish modern apps were more like a 50 year old text editor
Someone's love letter to how everything is a command in Emacs. I tried to sell this approach for Textual, especially when the idea of a command palette was first raised. Sadly it never came to pass.
I think it would still be an excellent idea.