The following are the salient parts:
"During the whole span of the Year of Faith, proclaimed from October 11, 2012 to the whole of November 24, 2013, all individual faithful truly repentant, duly confessed, communing sacramentally, and who pray according to the intentions of the Supreme Pontiff, will be able to acquire a Plenary Indulgence from the temporal punishment for their sins imparted by God’s mercy, applicable in suffrage to the souls of the deceased faithful.
"a.- Every time they take part in at least three instances of preaching during the Sacred Missions, or at least three lessons on the Acts of Vatican Council II and on the Articles of the Catechism of the Catholic Church in any church or ideal place;
"b.- Every time they visit by way of pilgrimage a Papal Basilica, a Christian catacomb, a Cathedral; Church, a sacred place designated by the Ordinary of the place for the Year of Faith (for example between the Minor Basilicas and the Shrines dedicated to the Blessed Virgin Mary, to the Holy Apostles and to Patron Saints) and take part there in some sacred function or at least pause for an apt time of recollection with pious meditations, concluding with the recitation of the Our Father, the Profession of Faith in any legitimate form, invocations to the Blessed Virgin Mary and, according to the case, to Holy Apostles or Patrons;
"c.- Every time, in days determined by the Ordinary of the place for the Year of Faith (for example on the solemnities of the Lord, of the Blessed Virgin Mary, on the feasts of the Holy Apostles and Patrons, on the Chair of Saint Peter), in any sacred place they participate in a solemn Eucharistic celebration or the Liturgy of the Hours, adding the Profession of Faith in any legitimate form;
d.- A day freely chosen, during the Year of Faith, for the pious visit of the baptistery or other place, in which they received the sacrament of Baptism, renewing the baptismal promises in any legitimate formula.
Diocesan or Eparchial bishops, and those who in law are equivalent to them, in the most appropriate day of this time, on the occasion of the main celebration (for example November 24, 2013, on the solemnity of Jesus Christ King of the Universe, with which the Year of Faith will close) will be able to impart the Papal Blessing with the Plenary Indulgence, to be gained by all the faithful who receive this Blessing devoutly.
"The truly repentant faithful, who cannot take part in solemn celebrations for serious reasons (as, first of all, nuns that live in convents of perpetual cloister, anchorites and hermits, prisoners, the elderly, the sick, as well as those that, in hospitals or other nursing places, give continuous service to the sick …), will obtain the Plenary Indulgence in the same conditions if, united in spirit and thought to the faithful present, particularly in moments in which the Words of the Supreme Pontiff or of the Diocesan Bishops are broadcast on television or radio, recite in their own home or where the impediment keeps them (for example in the chapel of the convent, of the hospital, of the nursing home, of the prison …) the Our Father, the Profession of Faith in any legitimate form, and other prayers in keeping with the objective of the Year of Faith, offering the sufferings or discomforts of their life."
For the Text of the Decree, go to the link: ZENIT - Decree Granting Plenary Indulgence for Year of Faith