Here's a tip: Don't use the poser hair until you're used to working with poser. It slows down the render engine like hell. I assume you're using Poser 5. First tip: download V3 and M3 and Aiko LE from DAZ3d.com for free. They're some of the most popular and widely supported models. Second, visit www.renderosity.com for free high quality texture sets. I found Pia for V3 great for starting with Poser. And download some decent lighting sets from runtimedna.com. Send me a PM or something if you need any help. DAZ3d and r'osity also have some great tuts.

The only way to tackle Poser is in bitesize chunks. First master the basics..creating a scene and rendering. Then play with clothing. Then play with parenting props. Then play with dynamic clothing. Then attempt hair. And lighting.