Becoming familiar with cloud computing will help you to understand what is involved with deploying to the cloud, how cloud billing works, and understanding how elastic the environment is.
Specifically what to learn about Azure, do the following
Sign up for a 30-day Azure pass
[
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http://windowsazurepass.com/[
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Download the Azure Training Kit.
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=8396[
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Download the latest Azure SDK
http://www.windowsazure.com/en-us/develop/downloads/[
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Work through some of the Training Kit examples in coordination with your 30-day free pass to Azure.
And also look these links for better understanding
http://msdn.microsoft.com/en-in/ff380142[
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http://www.windowsazure.com/en-us/home/tour/overview/[
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Thanks,
SP