Arduino

Arduino started in 2005 as a project for students at the Interaction Design Institute Ivrea in Ivrea, Italy. At that time program students used a "BASIC Stamp" at a cost of $100, considered expensive for students. Massimo Banzi, one of the founders, taught at Ivrea.
A hardware thesis was contributed for a wiring design by Colombian student Hernando Barragan. After the wiring platform was complete, researchers worked to make it lighter, less expensive, and available to the open source community. The school eventually closed down, but one of the former researchers, David Cuartielles, continued to promoted the idea.
The current prices run around $30 and related "clones" as low as $9.
(Source: Wikipedia. http://en.wikipedia.org/wiki/Arduino#History)

This page is to help people at all levels of experience get started, build skills, enhance skills, or develop mad Arduino hacking skills. Comments and file sharing have been provided to promote comments, additional links, give advice, etc.

Getting Started
Intermediate Arduino 
(These links go beyond building basic skills are related to more intensive and time-consuming projects)
Advanced Arduino 
(These links reference site which extend and build upon basic and intermediate Arduino skills, using a variety of the accessory modules available for Arduino)