I am always surprised by how much I learn whenever I catch even a snippet of a 3D modeling tutorial and cadjunkie's video's are easy to follow and understand for the beginner, with enough new information to be worthwhile even if you have thousands of hours experience with a CAD package. If you would like to delve deeper into the theory behind CAD modeling you can drown your self in some serious CAD geekery on Adam's site.
My company has a serious firewall that blocks even the most innocent of sites but I got into this one after a message popped up that the site used Java... possibly your anti-virus prog's picked this up as a threat...?
For information - this was reported by Eset when visiting the site:
The connection was blocked from: http://184.108.40.206/sex/clhsywxldodvkra.jar
A variant of Java/TrojanDownloader.OpenStream.NAU trojan.
Threat was detected upon access to web by the application: C:\Program Files (x86)\Java\jre6\bin\java.exe.