Transcender has offered a 15% discount on practice tests, study guides and eLearning courses (excludes CD with Exam Voucher products).
NTSSUG discount code: TRASQLUG_ntx
O'Reilly Publishing offers a 35% discount on O'Reilly, No Starch, PC Publishing, Pragmatic Bookshelf, Rocky Nook, SitePoint, or YoungJin products purchased directly from O'Reilly. The discount code is DSUG.
Sean and Jen McCown (aka the Midnight DBAs) are hosting the recorded sessions from our NTSSUG user group meetings on the MidnightDBA.com website. View those recordings here. Also check out the other videos while you're there!
SQLShare.com - Short, targeted video lessons for learning SQL Server
SQL Server 2008 Books Online
SQL Server 2005 Books Online
ConnectionStrings.com - A listing of dozens of common connection strings for various databases and providers
Several members of our group are regular bloggers: check out the NTSSUG blog page to see what they're up to.