ASCE Structural Control Committee
IASCM - International Association of Structural Control and Monitoring
European Panel on Structural Control
Matlab Exchange - Good programs for use with Matlab
Matlab Tutorials - Basic and Advanced Tutorials
DSP Stuff - Richard Baraniuk's webpage contains nice time-frequency information
Units Conversion - Pretty useful if you want to convert units
Ansys Examples - Contains very good basic tutorials for Ansys beginners
NEES Colorado - Hybrid Testing information