You can read the Pope's letter announcing the year here. As a preparation, it would be good to reflect on the short excerpt below:
During this time we will need to keep our gaze fixed upon Jesus Christ, the “pioneer and perfecter of our faith”: in him, all the anguish and all the longing of the human heart finds fulfilment. The joy of love, the answer to the drama of suffering and pain, the power of forgiveness in the face of an offence received and the victory of life over the emptiness of death: all this finds fulfilment in the mystery of his Incarnation, in his becoming man, in his sharing our human weakness so as to transform it by the power of his resurrection. In him who died and rose again for our salvation, the examples of faith that have marked these two thousand years of our salvation history are brought into the fullness of light.
