Nice find! This looks to be a very thorough guide that explains a lot of the code and some nice projects to boot.
agree i must with this.
their starter kit has everything to complete the tutorials and is pretty amazing, im working my waythrough it and its pretty dammned impressive.
Ladyada has an excellent Arduino Starter manual that comes with the Oomlout Starter kit:
You can doewnload it for Insructables: http://www.instructables.com/id/Arduino-Expermentation-Kit-How-to-get-Started-wi/
or from her website: http://www.adafruit.com/index.php?main_page=product_info&cPath=17&products_id=170
It is a very clever kit in that it has printable breadboard overlays for building circuits.