Manning Publications has just released PowerShell in Depth, Second Edition by Don Jones, Jeffery Hicks and Richard Siddaway. To help celebrate the release, you can use code psid2epb to take 50% off the regular price when you purchase it on manning.com.
Here’s a summary of what you get from the book from Manning’s page:
PowerShell in Depth, Second Edition is the go-to reference for administrators working with Windows PowerShell. Every major technique, technology, and tactic is carefully explained and demonstrated, providing a hands-on guide to almost everything an admin would do in the shell. Written by three experienced authors and PowerShell MVPs, this is the PowerShell book you’ll keep next to your monitor—not on your bookshelf!
Take advantage of this great offer while it’s still available. This code expires on 17-Nov-2014.