Well the normal place to start in the industry is making a free website with sponsors that will pay you everytime your website generates a sale for them. I recommend starting with promoting webcams. Thats what I did and im having great succes with it...
My main sponsor is
Cams.com. They offer a whole lot of material for your website. And it's one of the easiest sponsors to sell... they pay you 50$ per sign up or 20% of everything your site sells...
If you want to build some kind of galleri instead, try
Nasty Dollars. also a really god sponsor. They have tons of images and videos you can use on your website to promote them. And it's free to use..
An alternative to them is
Brain cash. Also a sponsor with tons of images and videos.
Try to combine them maby. Or just go for it and try your way forward...
If you need some help you welcome to ICQ me 348-061-510