Ebook : WMI Query Language via PowerShell

I have just finished reading this excellent ebook about using and running WMI queries inside Powershell:

http://www.ravichaganti.com/blog/?p=1979

As mentioned in the author's blog post,this ebook has the following 9 chapters:

1. Introduction
2. Tools for the job
3. WMI Data queries
4. WMI Event Queries: Introduction
5. Intrinsic Event Queries
6. Extrinsic Event Queries
7. Timer Events
8. WMI Schema Queries

Happy reading, Windows sysadmins!