Hello Kirtika mam, Kontera ad network is an online ad agency which delivers in text ads and whenever some visitor click those text links you get paid for it. Revenue through kontera ad network is very less when compared to Google Adsense but it have lot of other advantages like, these ads do not covers or demands extra ad space in your articles and sometimes increases adsense CPC too. You can apply to Kontera Ad network after reaching Gold Level. All you need to do is to go to Manage Third party Ad revenue sharing option in your profile page. After that you will find all necessary information about how to apply to kontera ads. For full information please visit this link What is Kontera and how to apply? In case you need any type of further clarification please ask by making comment or by another forum message. You are doing really well, keep it up !Thanks and Regards, Narender Sharma.