This second open access Handbook was created to support the face-to-face and online courses organised by the Web2LLP project team. The Handbook provides information about social networking mechanisms that are perceived as components of a coherent digital communication strategy. The Handbook targets managers and members of projects funded under the LLP of the European Commission, as well as submitters of LLP proposals. The Handbook was produced by Silvia Miola and Katerina Zourou.