Other good web resources for learning to work with the Arduino platform:

• Todbot's Arduino Tutorial
• Kelsey Park Electronics Club
• CCRMA's introduction to Electronics
• [http://cm-wiki.stanford.edu/wiki/Sensors]
• Input/Data Acquisition Design for Human Computer Interfacing (CCRMA)
• ITP Sensor Wiki a good source for info on all the different sensors out there

Books by Tom Igoe (NYU):

• Physical Computing
• Making Things Talk