This article at Free Software Magazine covers Debian on the desktop. It is not a step by step tutorial, but focuses on the highlights of the recent Etch release.
Read it here
I feel that Debian Etch is as good on the desktop as it is on the server. It has a long rich history, a strong community, is amazingly stable and is a great fit for both my servers and my laptop. I urge everyone to give it a go on the desktop.