First off, install dependencies

sudo apt install -y ripgrep fd-find
git clone --depth 1 ~/.emacs.d
~/.emacs.d/bin/doom install

After you enable modules, or add packages, run sync command so that everything is prepared.

~/.emacs.d/bin/doom sync

After you upgrade/downgrade emacs, you need to rebuild packages.

~/.emacs.d/bin/doom build

Whenever you did above, don’t forget to restart emacs or M-x restart-emacs

Key Bindings

Doom Emacs default key binding is vim-mode.