Hydra Network is one of the most popular affiliate networks available. They offer a wide-range of offers from zipcodes/emails and ofcourse free trials. Sign up is easy and it’s free. Once you fill out a short form, they’ll contact you to get everything set up. Then with your new username/password, you log in and start promoting offers that you want. How much you make is all up to you.
* They’ll beat any payout for the same campaign