org https://youtu.be/hUfKczU2sRY?t=815
conf emacs https://www.youtube.com/watch?v=bnu-ZGpRly4

harold serra motivation https://www.twitch.tv/videos/396442702
harold git gui vs command https://www.twitch.tv/videos/399164687

curso emacs
https://lapipaplena.wordpress.com/2015/03/22/curso-emacs-2-iniciando-emacs-y-moviendonos-con-soltura/

configuracion tutorial spacemacs
http://spacemacs.org/doc/QUICK_START.html
http://spacemacs.org/doc/DOCUMENTATION.html
http://spacemacs.org/doc/LAYERS.html
http://spacemacs.org/layers/LAYERS.html