With cpa networks, you have many different payout options. Per Sale, Per Trial, Per Lead, Per Click, etc.
If you are just starting, I would look for some Per Lead offers that you feel you generate leads for. They don't pay much($.50-$9.00) per lead
but don't usually require much. Email Submit offers pay lower, but usually only require the email address to get paid. SOI(Single opt-in, doesn't need
to be verified) or DOI(Double opt-in, verifies email that is submitted by emailing a link to be clicked.)
Hope this helps.