This Vademecum is designed as a handbook that accompanies the Preparatory Document at the service of the synodal journey. The two documents are complementary and should be read in tandem with one another. In particular, the Vademecum offers practical support to the Diocesan Contact Person(s) (or team), designated by the diocesan Bishop, to prepare and gather the People of God so that they can give voice to their experience in their local Church. This worldwide invitation to all the faithful is the first phase of the XVI Ordinary General Assembly of the Synod of Bishops, whose theme is “For a Synodal Church: communion, participation and mission.”