Ken's Guide to [1]#LISP and [2]#Emacs . a) Take everything you
   know about using a computer. b) Take everything you know about
   programming. Got it all together? Good.* Now: c) Throw it all
   away. Now your mental reprogramming will begin.

References

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   1. https://plus.google.com/s/%23LISP
   2. https://plus.google.com/s/%23Emacs