Application Virtualization - - App V. on Technet - Free apps and utlities - How to run scripts inside the OSD file - Latest KB articles on App V. 

DaRT - Debugging tools - How to install WinRE on hidden partition

AIS - Step-by-step guide to deploy AIS

Blogs: - Independent blog - Microsoft Blog

Tools: - SFT Explorer - Toolkit with App V server ping tool - App V. resourcekit tools