Main entry for tutorials:
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For the most efficient emacs keybinding, see Emacs: Xah Fly Keys
For ergoemacs-mode the keybinding package, see https://ergoemacs.github.io/. It is part of GNU Emacs project, maintained by Matthew Fidler [https://github.com/mattfidler].
You might also like my other programing tutorials. The best are
my other tutorials: Programing Language Tutorials Index.
emacs manual (info "(emacs) index")
elisp manual (info "(elisp) index")