
If you haven't already done so, all you need to do is go to http://www.3dbuzz.com [3dbuzz.com] and register a user name. Then you'll have access to links in the navigation on the left navigation. Click “Online Courses” and you'll see a link for Houdini. Fill out the info and that's it! Then get to learning

Although I am a bit biassed, this Houdini course is really impressive and is going to be awesome for learning in at a professional level.
Thanks again SideFX for the opportunity to learn this way!