This SDN article explains how to get started with the OpenSolaris OS, including answers to questions like "Where Is Everything on OpenSolaris?"
From SysOp - 23 Nov >
If you upgrade to Solaris 10, you can take advantage of the new features of Solaris 10 while continuing to run your Solaris 8 applications. More info
here.
From SysOp - 20 Nov >
This tutorial on developers.sun.com uses DTrace, a powerful diagnostic tool in Solaris 10, to analyze several applications. The article also shows how using DTrace can improve performance.
New BigAdmin section that highlights threads from the Sun Forums that could be helpful. If you find a thread that answers a question, submit it for some Bucks!