This is a collection of PowerShell scripts that I use for demos, and as a resource for the community.
There is a select set of scripts created by me. There is a much larger set of scripts available at the Microsoft Azure Script Center (http://azure.microsoft.com/en-us/documentation/scripts/)
You should also learn about the "Azure Automation" (http://azure.microsoft.com/en-us/documentation/services/automation/) service which allows you to create Runbooks (collections of scripts) to manage your Azure resources.