Admittedly, the URL http://technet.microsoft.com/en-us/library/bb978526.aspx does not readily roll off the tongue. So PowerShell users should book mark this page. Microsoft has just updated the TechNet site with the full PowerShell help files. Better yet, these are the latest updates and include fixes, etc. Thanks to superstar June Blender for getting this done.
If the help isn't clear enough for you, use the feedback mechanism to leave a comment. I'm sure these will be actioned as quickly as possible!