Definitive Guide to Citrix Zones
http://community.citrix.com/display/xa/The+Definitive+Guide+to+Zone+Design
Unattended XenApp 6 Configuration
http://support.citrix.com/article/CTX124295
Install and Enable XenApp 6.0 SDK
http://support.citrix.com/article/CTX126471
XenApp Server Configuration Tool
http://support.citrix.com/article/CTX124981
XenApp Farm Maintenance - Advanced Concepts
http://support.citrix.com/article/CTX677542
Dedicated Data Collector