There are a huge number of Arduino-related resources available online. This should get you started.
General Arduino Information
Official Arduino site: www.arduino.cc
Arduino discussion forum: www.arduino.cc/cgi-bin/yabb2/YaBB.pl
Freeduino knowledgebase: www.freeduino.org
Electronics Parts Suppliers
Digi-Key: www.digikey.com.au
Jaycar: www.jaycar.com.au
