Useful links:

http://www.officeusers.org/ – tips and tricks
http://technet.microsoft.com/en-us/library/cc303401.aspx – 2007 Office Resource Kit
http://technet.microsoft.com/en-us/library/cc179219.aspx – Language indentifiers
http://technet.microsoft.com/en-us/office/desktop/default.aspx – Technet
http://office.microsoft.com/en-us/FX102855291033.aspx – Office Online
http://technet.microsoft.com/en-us/library/cc179179.aspx – Office Migration Planning Manager (OMPM)
http://technet.microsoft.com/en-us/desktopdeployment/bb395347.aspx – Office deployment the "MDT way"
http://www.microsoft.com/events/series/technetoffice.aspx?tab=webcasts – Office 2007 deployment webcasts
http://www.microsoft.com/events/series/technetoffice.aspx?tab=webcasts&id=42542 – Various Office 2007 webcasts