I second Emacs Lisp. Call `emacs -Q` (to open it without an init) and press enter. Emacs should have started with the default splash screen open and the cursor

I second Emacs Lisp. Call `emacs -Q` (to open it without an init) and press enter. Emacs should have started with the default splash screen open and the cursor over the link to the tutorial. Read the tutorial and understand the basics of Emacs. Next, read An Introduction to Programming in Emacs Lisp. It's a lovely book and fun to read: https://www.gnu.org/software/emacs/manual/html_node/eintr/index.html https://www.gnu.org/software/emacs/manual/html_node/eintr/in... Learn to read and work with Lisp by reading the Emacs source code and playing with it. Check out the Evolution of Emacs Lisp. It's a neat little Lisp! https://dl.acm.org/doi/10.1145/3386324 https://dl.acm.org/doi/10.1145/3386324 Emacs has the best documentation and documentation system ever made. Learn C-h f, C-h v, and friends, as well as the info system and the power of indexes. I hope you find joy and wonder exploring Emacs and Emacs Lisp like so many others have for nearly 40 years!