You can get by promoting your web site socially. For this first promote your site so that people will come genuinely to your site not by reffence, after that advertise other persons/websites product on your website but a genuine and real products . You can also put some google ads on your website pages and for this purpose google will pay you according to clicks that he will get from your site . For more information kindly read Google policy and rules for PPC(Pay Per Click).