Ramping up? Here is what I have found - please share what you have found.
To start you off there is a TechNet library node for PowerShell core at: http://technet.microsoft.com/en-us/library/bb978525.aspx
"...contains the Help content for conceptual topics, cmdlets, and providers. This content is published here on TechNet so that we can provide updates to the Help content that is shipped with Microsoft® Windows® PowerShell."
Codeplex PowerShell Community Extensions