Install gnome-shell-extension-shortcuts by entering the following commands in the terminal:
sudo apt update sudo apt install gnome-shell-extension-shortcuts
Description:
Creates a shortcuts help pop-up in GNOME Shell
Shortcuts is a GNOME Shell extension that creates a pop-up when Super + S is pressed that gives a list of useful keyboard shortcuts in the GNOME Shell desktop environment
Homepage: https://gitlab.com/paddatrapper/shortcuts-gnome-extension
Version: 1.1.1-1
Section: universe/gnome