Ebook: Windows PowerShell 2 For Dummies

If you have Windows 7 then you have powershell version 2.0. This book is written for version 2.0 CTP3 which is a Community Technology Preview. Which means it is beta and now OLD.

The problem started on page 29 listing commands in version 2.0 CTP3 that do not exist in the production version that comes with Windows 7. The commands arnt' slightly different they are wildly different.

[...] doesn't list any corrections so don't bother with this book.