There's not much out there for free, and even less worth the time it takes to download it.

If you're starting from scratch, allow me to recommend that you spend $40 on a one-month subscription to Poserworld.com. Then you can download hundreds of items at no further charge. It's a great way to get a base of materials if you are new to Poser. The quality is variable, but at the price, it's a major bargain. Then you can feel better about "filling in the blanks" with the more expensive items at the other sites.

If you can't afford that, then I'm afraid I can't think of much to offer.