Arduino:
Arduino Home – http://www.blenderguru.com/video-category/tutorials/
Arduino Examples and Tutorials – http://arduino.cc/en/Tutorial/HomePage
Arduino Reference – http://arduino.cc/en/Reference/HomePage
Jeremy Blum’s Arduino Tutorials – http://www.jeremyblum.com/category/arduino-tutorials/
TCNJ’s Arduino Workshop Series –
#1 http://asme.pages.tcnj.edu/?p=495
Raspberry:
Raspberry Pi Home – http://arduino.cc/en/Reference/HomePage
Raspberry Pi YouTube Tutorials – http://www.youtube.com/user/RaspberryPiTutorials