Hello. I'm new here and I would like to ask for suggestions regarding advertising for multiple websites. I've a site with some banners for publicity. I track them using Google Analytics. No big deal here. I'm developing a newer version of this site and I would like to join with a partner (another site which is not mine) and offer publicity for both sites (or more in the future). The idea is to start creating a network of similar sites to mine and sell the hole package of publicity which will include putting a banner in all the sites. Nothing new here, but the problem is I don't know how to start. I don't know how to track and manage the ads from sites which are not mine. I'm starting to learn about DFP but I don't think it's going to work because you need one account per site. Do you know any system that allows me to do this? Is there any good book about online advertising? PS: Sorry for my English. It's not my mother language. Thanks in advance,