Great Introduction to Computer Programming Concepts

This is a great site that let's people with no computer programming experience whatsoever learn the basics of coding. This is really excellent!

http://www.codecademy.com/

Arduino

This is a really cool PDF that introduces what arduino electronic prototyping is via a fun comic strip format.

http://www.jodyculkin.com/wp-content/uploads/2011/09/arduino-comic-latest1.pdf