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TODO A few examples to grok it

Documentation

From the creators: 

• http://twig.sensiolabs.org/
• http://twig.sensiolabs.org/documentation
• http://twig.sensiolabs.org/doc/templates.html Good outline of syntax and semantics

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Tutorials:

• Not Drupal specific despite being on Drupalize.me but fairly comprehensive outline of all the concepts. 
  https://drupalize.me/videos/twig-basics?p=1899
• Overview page with links to all the Drupal-specific Twig videos.
  https://drupalize.me/tutorial/twig-drupal?p=2512

• Lots more in-depth and Drupal specific stuff here.
  https://drupalize.me/search?query=twig

Dev Setup

• Atom
  • Language support: https://github.com/reesef/php-twig
  • Snippets: https://gist.github.com/soniktrooth/593722ae72a57cd1a5d06efaa8a09ce8