MSDN Technet is offering a 30 day pass promotional code to sign up for the Windows Azure Platform and get access to online training to help you put Windows Azure and SQL Azure through their paces. No credit card required.

The promotional code is MSDNT1 and is working for United States. Not sure about the rest of the countries but you may want to try it.

Windows Azure Online 30 day pass

HTH!!!

Note: Please be sure to read the privacy policy on the website before signing up.