Org-mode and Magit are the killer apps in emacs, for me. I also extensively use org-mode to publish static sites and, well, organize essentially everything in

Org-mode and Magit are the killer apps in emacs, for me. I also extensively use org-mode to publish static sites and, well, organize essentially everything in work and my private life. Learning org-mode is quite a valuable activity, in my opinion and experience.