Arduino on OpenSuSe 12.1
http://arduino.cc/playground/Linux/OpenSUSE
(One advice, for some unknown reason Blink sketch does not work properly. However, BlinkWithoutDelay works pretty well.)
Arduino Comic v0004
http://arduino.cc/playground/uploads/Main/arduino_comic_v0004.pdf
Microcontroller Programming Beginning with Arduino
http://www.acm.uiuc.edu/sigbot/tutorials/2009-11-17-arduino-basics.pdf
Manuals
http://arduino.cc/playground/Main/ManualsAndCurriculum
Interfacing with Hardware
http://arduino.cc/playground/Main/InterfacingWithHardware
Getting Started w/ Arduino on Windows
http://arduino.cc/en/Guide/Windows#toc1
Virtual COM Port Drivers for Windows*
http://www.ftdichip.com/Drivers/CDM/CDM20814_WHQL_Certified.zip
*includes the following versions of the Windows operating system: Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2. http://www.ftdichip.com/Drivers/VCP.htm
Arduino Notebook v6
http://www.lulu.com/items/volume_63/1108000/1108699/4/print/ARDUINO_NOTEBOOKv6.pdf
Serial Library