Discover features in Emacs using the built-in docs
Raw link: https://www.youtube.com/watch?v=sRsjvirr1B8
In this screen cast I demonstrate the numerous ways of accessing the built-in documentation of Emacs. These allow you to bring to the surface information and advanced functionality that is pertinent to the task at hand.
What I showcased here requires no external packages or further customisations. But you can still have a look at my configuration file: protesilaos.com/emacs/dotemacs.