You can watch these webinars & videos using the players below or download them for viewing later. They are provided in MP4 and WMV file formats, so should be viewable on most systems.
If you like the webinars, be sure to check out our Guerrilla UCD series of 16 x 90 minute videos. They're competitvely priced, particularly when compared with face-to-face training. (Session 7 is on card sorting and includes an introduction to cluster analysis.)