Hari Wiguna
- Getting Started with Arduino by Arduino.cc
- Learn Arduino by Simon Monk at AdaFruit.com
- Arduino Tutorials by Jeremy Blum at Element14.com
- Arduino Lessons by TopTechBoy.com
- Arduino Tutorials by John Boxall at TronixStuff.com
- Arduino Workshop for Beginners by Graham of Core-Electronics
Other Resources
lucas bigeardel
Alex Anderson
Lais
Georgi Angelov
@ScottC also posted a ton of tutorial links on Quora.
http://www.quora.com/What-are-the-best-Arduino-tutorials