I have been using this site not for so long but it's really effective that I can say. It has unique futures with really high ratings if you use it long term (Not like other fake/low rated sites). Just sign up now and start earning!
Link: https://goo.gl/Kqp5n6 (Without any shorteners , only Google one)
Method: I think , you don't need a method or special knowledge for this site but I can say that you should check your paid ads per 5-12 hours and do other daily stuff as well. Just do not like give up easily , as like I said it's a long term project so if you use it like for sometime you will definitely earn some nice money by just doing basic ad watching stuff.