http://www.raspberrypi.org/ – Official Raspberry Pi Web Page
http://raspberrypi.stackexchange.com/ – Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi.
http://www.reddit.com/r/raspberry_pi – Raspberry Pi SubReddit
http://www.raspbmc.com/ – Raspbmc is a minimal Linux distribution based on Debian that brings XBMC to your Raspberry Pi.
http://openelec.tv/ – OpenELEC is an embedded operating system built around XBMC, the open source entertainment media hub.
http://www.berryterminal.com/doku.php/berryboot – Berryboot is a simple boot selection screen, allowing you to put multiple Linux distribution on a single SD card.
http://www.stuffaboutcode.com/2012/05/raspberry-pi-connect-nas-windows-share.html – Edit /etc/fstab on a Raspberry Pi to auto connect Windows Shares at boot