The primary source of IBM-provided documentation is the Sametime wiki. This can be found at http://www.lotus.com/ldd/stwiki.nsf. The wiki is a public website and is open for comments and updates by anyone working with Sametime. We have also included the following resources that you may find useful.
Sametime product website:
Sametime 8.5.2 Release Notes:
IBM Sametime 8.5.2 Installation, Migration and Configuration Guide: