A quick tip -
If you are using your trusty Mac to log into the Autodesk University Registration page and it seems to get stuck, chances are – you are using the default Safari to do this. I have commiserated with other fellow Mac-ites trying to the same and we all came to the consensus that AU Registration hates Safari. So, I fired up Firefox (and the other person used Chrome) for Mac and all went through fine without a hitch.
So, use something other than Safari to register.
For the record, I was "Chrome" user - sadly the AU registrations site is not Safari friendly :(