I am very thrilled and excited about Packtpub publisher’s recently published “PowerCLI Cookbook”. I have been part of a reveiwer team and spent couple of months for its accuracy. You can purchase this book at https://www.packtpub.com/virtualization-and-cloud/powercli-cookbook
You can check the free chapter at the above link. I am sure you will like the book as lots of effort has gone preparing recipes. Due to the timing for the release of vSphere 6, the publish was delayed but finally it got published.
Do provide feedback after reading the book.