from a rank beginner in the clothing trade (me)
Start simple; there's 2 routes you can go
"2nd Skin" - just color parts of the body in clotheslike colors (use the material room if you have P5 or better...;), and you have instant long underwear...

actual modeling - start with things that don't have to bend (too much); sandals, headbands (good idea), hats, helmets wristbands, etc. If you're just starting out, there's free modeling programs, (hundreds), but Wings 3d, Anim8tor, and Blender are a good place to start.

If you do get the hang of modeling, note that

1. Poser's scale is way different from anyone elses' - exporting a character into modeling programs makes a mouse-size model show up, while making a hat in another program can give you a Poser bathtub-sized chapeau..;)

2. Poser is for doing organic-types of things; bodies, curves, bones, etc. Poser will try to make everything conform to that sort of thing; so that wonderful sharp edge on your sword or temple, or crease on the trousers will be blunted into melted wax. There's tricks around that (slight bevels, etc), but this is sort of intermediate stuff.

See Doc geep, Quinlor, and other people for the basics on modeling (whether in Poser or out), and we should have a 'cajun' coming by with 10 paragraphs and 30 links...oh... any minute now...;)

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)