 Relationships are everywhere. Social networks are not just social media sites like Twitter or Facebook. They are structures of relationships and they are underneath many phenomenon. They are in government structures, in collaborations among civil society or social movement organizations, collaborations among corporations, in the diffusion of information, in the transmission of diseases. They are underneath many phenomenon and to be able to analyze and to understand the shape of these structures allow us to understand many things of these fields. In this course you will learn how to collect, analyze and interpret network data and you will be able to apply these methods to a small research project on the topic of your own interest.