I agree with Tonnele, you have to find something that you are interested in, otherwise you will lose motivation very quickly. Looks for prodcuts you like and would buy online and find an affiliate program through their websites..
I use a few sites that are great for beginners. I can help you out a little and we can make some money if you are willing to work a little bit. But no money needed to get started. Let me know if you want some help.