The integration of young immigrants is a key issue in European societies. The article examines how Moroccan and Romanian youths employ their family social networks to move beyond them to get access to other available resources in their context of migration. We find that youths evaluate families as their main source of social capital. But how do they combine family and kinship resources to build new networks? The study draws on 57 in-depth interviews with teenagers from secondary schools in the Veneto Region, a paradigmatic area for the increasing ethnic pluralization of Italian society. Moving beyond the usual understandings of social capital and social networks we focus first on the relationship between bonding and bridging, in particular the distinction between horizontal and vertical bridging among migrants. Then attention is paid to the agency of youths, stressing their social competence to overcome initial difficulties such as gender inequalities or the limits of bonding solidarity.