There is a lot of traffic sources but most of them are not affiliate friendly. This ebook here - Traffic Sources 2016 give a list of more than 100 free and paid traffic. The speical thing about this ebook is that all traffic sources are affiliate freindly - you can start promoting your affiliate products right away. With some effort put into it, even with no invesmest (only from the free traffic resources) you can earn a lot of money!