Processing
http://processing.org/
http://www.openprocessing.org/
Arduino
https://www.arduino.cc/
https://www.arduino.cc/en/Tutorial/HomePage
http://playground.arduino.cc/
Javascript
https://developer.mozilla.org/en/docs/Web/JavaScript
https://jquery.com/
http://api.jquery.com/
http://paperjs.org/
http://p5js.org/
https://nodejs.org/
Openframeworks
http://www.openframeworks.cc/
http://www.ofxaddons.com/
Blogs/Inspiration:
http://www.instructables.com/
http://www.ecogex.com/delectable/
http://www.siteinspire.com/
http://www.makery.info/en
http://makezine.com/category/electronics/
http://formandcode.com/
http://www.creativeapplications.net/
http://codedoodl.es/
Articles / Books
http://manovich.net/index.php/projects/the-algorithms-of-our-lives
Making Thing See, Greg Borenstein
Processing: A Programming Handbook for Visual Designers and Artists, Casey Reas and Ben Fry
Generative Design, Hartmut Bohnacker, Benedikt Gross, Julia Laub, and Claudius Lazzeroni
Visual Complexity: Mapping Patterns of Information, Manuel Lima
JavaScript: The Definitive Guide, David Flanagan
Making Things Talk, Tom Igoe
Conditional Design Workbook, Conditional Design
From Counterculture to Cyberculture, Fred Turner
Tools for conviviality, Ivan Illich