Understanding Microsoft Virtualization Technologies
by Mitch Tulloch
The Second Edition of this free eBook covers current MSFT Virtualization technologies like Hyper-V, Virtual Machine Manager, App-V, MED-V and MS VDI based on RDS.
The App-V Client Book
by Timothy Mangan with Kevin Kaminski
http://www.tmurgent.com/TheClientBook/default.aspx
This book covers several apsects about the App-V Client version 4.5 and 4.6. It focuses on the managemtn of the App-V client (like installation, general procedures, using the command line interface and explaination of the Managent console and Registry settings
Getting Started with Microsoft Application Virtualization 4.6
by Augusto Alvarez
App-V 4.6 Getting started covers the foundations of Microsoft Application Virtualization including Installation, Management and Sequencing. It is available as Paper and eBook
Microsoft Application Virtualization Advanced Guide (announced)
by Augusto Alvarez
http://blog.augustoalvarez.com.ar/category/books/
The App-V Advanced Guide covers more advanced topic like large-scale implementations, advanced Sequencing and others.