Active Directory Troubleshooting Survival Guide

this looks interesting

“This page categorizes the Active Directory troubleshooting information that is spread all over the Internet, so you can get to resource you need to solve your specific issue.”

http://social.technet.microsoft.com/wiki/contents/articles/active-directory-troubleshooting-survival-guide.aspx

#Lync Powershell Cheat Sheet

From the powergui guys

http://powergui.org/entry.jspa?externalID=3091

looks pretty useful and Lync seems to be very popular at the moment.

Kerberos and NTLM Accessing Resources

Some more quality posts from MVP Jorge

http://blogs.dirteam.com/blogs/jorge/archive/2011/02/13/accessing-a-resource-with-the-kerberos-authentication-protocol.aspx

http://blogs.dirteam.com/blogs/jorge/archive/2011/02/13/accessing-a-resource-with-the-ntlm-authentication-protocol.aspx