What is the best up-to-date, reliablely accurate book for learning PowerShell?

Hi,
In my previous thread, I asked why "get-disk" gave me an exception.  Thanks to this forum, I found out that WIN 7, doesn't support the cmdlet.  The book I'm using did not mention this information.  In fact, he distinctly lists
Windows 7, SP 1 as a viable OS for the commands he wants the reader to perform.  I lost hours on this error. 
Se la vie. 
However, I now doubt the book and don't have time to ferret out additional errata.  So, if anyone has a suggestion for a trustworthy book for beginners, please share your knowledge.
Many thanks!

This is a duplicate.  This system is gebnerating hundreds of dupes because of constant server errors.
https://social.technet.microsoft.com/Forums/en-US/861dd4e7-f199-4c8c-ac72-3ffeeeee674f/what-is-the-best-uptodate-reliablely-accurate-book-for-learning-powershell?forum=ITCG
¯\_(ツ)_/¯

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