Building stores using data feeds
I have a sports related website that has really started to take off lately. I've had Adsense on for quite awhile and am finally starting to make a few bucks with. Naturally, I want to expand past Adsense, so I've started with some affiliate programs.
In looking into affiliates, I've come across making whole stores with API datafeeds and RSS feeds. This really appeals to me.
My question is, how do I start going about using these feeds? What programing skills do I need to pursue?
I'm very familiar with HTML and CSS, but other than that, I'm quite ignorant.