In Poser 7, you can find it in PDF format in the e Frontier > Poser 7 > Tutorials folder (see inset). The bookmarks on the side in this screen shot show the section where you'll find tutorials on the Cloth Room and other rooms. The Poser 6 Tutorial Manual is similar.

I have always wondered, why they have put it in that directory and not in the poser-root directory like the other manuals. I once spent days on the internet looking for a face-room tutorial I had seen somewhere, to find out the particuar tutorial was in the manual in the tutorial directory!