http://www.fallencity.net/ ---is where you find them.
Not a new site but one I had not visited in quite awhile. There is a lot of good stuff here, but the tutorial section is the grand-daddy. Featuring all of Dr. Geep's tutorials [over 40 of them] in zipped PDF format. If you are not familiar with DG tutorials you are in for a treat. He has 12 here dedicated to creating props within the Poser program using the primitives, plus tuts on some of the mysteries of Poser such as the grouping tool, wave tool...etc. All are done in graphic style with Posette as your guide, so you can learn and look at "pretty" without wading through a bunch of text.