There is an excellent post from Keith Mayer about Step-by-Step guide to build SCCM 2012 SP1 Lab in the Cloud. This is an excellent opportunity learn more about Windows Azure operating stuff along with Windows Server 2012 + CM 2012 SP1. While signing up for 90 days free trail, it will ask for Credit Card information and this is just for verification purpose and you won’t get charged until you covert free trail into a paid subscription on later stage. This lab setup will help you get more knowledge about Windows Azure Management portal, How to create virtual machines from Azure Management Portal and How to provision Windows Server 2012 in Azure.
So start Evaluating Windows Azure along with Windows Server 2012 and ConfigMgr 2012 SP1. Read full post here : Step-by-Step: Build a FREE System Center 2012 Configuration Manager SP1 Lab in the Cloud