It has been a while since I received a mail (still behind on mails) from my fellow Evangelist from Switzerland Frank Koch and I wanted to share this with you. He has written a 44pages book about Windows Powershell. If you don't have the time to absorb any other 400 - 500 pages book on PowerShell than this is what you definitively should read.
He calls it "An introduction to scripting Technologies for people with no real background knowledge".
Download the Book and DemoScripts