Could you be a bit more specific as to what you are looking for. Are you a vendor or affiliate? Do you have a blog/website already or are you starting from scratch? al
Hi, Affilorama.com has a very good informational site specifically on running affiliate sites. I believe that they also have an affiliate program for their site. Lots of useful information. And, no, I am not affiliated with them in any way, this isn't a sales pitch, just a recommendation of a site I have found useful in the past.