It’s been a while since I’ve updated this page, but I had bookmarked a bunch of elisp things. https://xenodium.com/emacs-lisp-bookmarks

There should be some links there that qualify the requirements, examples:

https://harryrschwartz.com/2014/04/08/an-introduction-to-emacs-lisp.html

https://github.com/abo-abo/elisp-guide

https://github.com/caiorss/Emacs-Elisp-Programming

Having said that, go to the built-in elisp manual to go deeper.

I can think of two options:

1. M-x find-dired RET RET RET (or adjust query): which will list all files recursively in dired. You probably don’t need to copy them elsewhere for renaming. Use M-x dired-toggle-read-only (or C-x C-q), rename in-place, and commit (toggle again C-x C-q). https://xenodium.com/batch-renaming-with-counsel-find-dired-and-wdired
2. dired-subtree: enables drilling down to multipe subdirectories from the same dired buffer. Expand the subdirectories needing management, and edit like 1. (via C-x C-q) https://xenodium.com/drill-down-emacs-dired-with-dired-subtree

Edit: markup

i want a video or a proof that emacs is wayy faster and efficient to code on than conventional vim

Watch all of https://emacsrocks.com

As a sneak peek, check out episode 13 (watch til the end)

Probably MELPA hadn’t picked up my changes when you tried it. Maybe update the lckage and try again.