Crash Course in Spacemacs

1. Button 'SPC' = M-m in vanilla Emacs mode (why oh why should I spend 10 minutes googling it...)
2. check it out: https://github.com/syl20bnr/spacemacs/blob/master/doc/QUICK_START.org
3. ditto           : http://thume.ca/howto/2015/03/07/configuring-spacemacs-a-tutorial/