1829 Study of Italian and Latin resumed with Fr. John Calosso (who died November 21, l829). 1830 Don Bosco attends Castelnuovo Public School Christmas l830 - Summer l831)

1831 From November onwards Don Bosco attends the public school in Chieri to study grammar, the humanities and rhetoric.

1835 Don Bosco enters the seminary in Chieri and begins his philosophy and theology courses. 1841 June 5, the Vigil of the feast of the Holy Trinity, Don Bosco is ordained priest.

1841 (November) Don Bosco is enrolled in the Convitto Ecclesiastico (Ecclesiastical College) in Turin for the practical study of moral theology and homiletics; he begins to gather young people and adults and teach them catechism.

1844 (October) Don Bosco is appointed chaplain to one of the works of Marchioness Giulia di Barolo.

1845 (May) – 1846 (March) The Wandering Oratory begins - at St. Peter In Chains Church to the Dora Mills, to the Moretta house, to the Filipppi meadows.

1846 (April 12) The Oratory finds its definitive location in the Pinardi Shed in the suburb of Valdocco. It is here that Don Bosco and his mother come to live. The evening schools begin during the winter of 1846-1847.

1847 The opening of the first Hospice; the St Aloysius Oratory is opened in the area of Porta Nuova; the St. Aloysius Sodality begins.

1848 (October 21) Beginning of the publication L'amico della Gioventu (The Friend of Youth), a religious, moral and political Newspaper (which would last only eight months and later merge into the Istruttore del Popolo (The People's instructor).

1849 Don Bosco takes on the management of the Guardian Angels Oratory from Fr.Cocchi, in the area of Vanchiglia in Turin,; he founds the workers society or the mutual aid society for which he would draw up a constitution in l850

1852 (March 31) Archbishop Fransoni is exiled to Lyons (France). He appoints Don Bosco the director and spiritual head of the Turin Oratory of St. Francis de Sales, with the Oratories of St. Aloysius and the Guardian Angel dependent on it.

1853 Don Bosco begins the publication of the Catholic readings and also opens a modest shoemaker’s workshop in the Oratory.

1854 The book-binding shop is opened. As an experiment, the seminal beginnings of the Salesian Society, Don Bosco proposes an associative, apostolic form of life to two clerics (Bl. Michael Rua is one and would become Don Bosco's first successor), and two other young men, one of whom becomes the future Cardinal John Cagliero. Don Bosco has his first encounter with government minister, Urban Rattazzi. Dominic Savio enrols as a pupil in the Valdocco Oratory (1842 - 1857).

1855 The third high school grade is introduced at the Oratory (up till now the students attended schools run by private individuals).

1856 The first carpentry shop is opened at the Oratory; the first two high school grades are introduced. The beginning of the Immaculate Conception Sodality.

1857 Beginning of the Blessed Sacrament Sodality; the creation of the Altar Boys Sodality; the St. Vincent de Paul Conference for young people commences.

1858 Don Bosco's first trip to Rome to present Pope Pius IX with the plan for his Religious Society dedicated to working for youth. The first outline of the Salesian Constitutions.