Just wanted to note that Lync Server 2013 Unleashed book/ebook is now available. It comes from 4 great core authors, Alex Lewis, Tom Pacyk, David Ross and Randy Wintel. I also contributed a chapter to the book (but don’t let that stop you buying it )
I work alongside Alex and Randy at Modality Systems so know well everyone involved in the book knows what they are talking about.
You can get the book physically, or kindle from amazon
Or direct from SAMS/Pearson (EPUB, MOBI and PDF), you can frequently Google for informit discount codes too.
While I am recommending books I’d also like to mention PowerShell Deep Dives. It’s a PowerShell book written by loads of key figures in the Powershell community, (Jeffery Hicks, Richard Siddaway, Oisin Grehan, and Aleksandar Nikolic, Don Jones, Arnaud Petitjean, Boe Prox, Bartek Bielawski, Mike Robbins, Vadims Podans, Ashley McGlone, James O’Neill, Jeff Wouters, Jonathan Medd, Adam Driscoll, Trevor Sullivan, Josh Gavant, Karl Prosser, Jim Christopher, Ben Miller, Donabel Santos, Robert C. Cain, Jason Helmick, Matthew Reynolds, and Chris Bellée),
Each author is writing a complete chapter on different practical PowerShell topics.
It’s not yet finally published, but it’s on mannings MEAP early access program, and from what I have read so far is definitely worth a look.