Catechism of the Catholic Church

 A “compendium of all Catholic doctrine regarding both faith and morals”.  An updated and systematic presention of “the teaching of Sacred Scripture, the living Tradition in the Church and the authentic Magisterium, as well as the spiritual heritage of the Fathers, Doctors and saints of the Church”. Promulgated by Pope John Paul II on 15 August 1997. Image links to Vatican translation. ISBN recommendation: 0385508190

Congregation for Divine Worship: Liturgy of the Hours According to the Roman Rite

The official daily prayers of the Roman Catholic Church. The current form, revised after Vatican II, was published and released 11 April 1971 with the approval of Pope Paul VI. Image links to free Liturgy of the Hours website. ISBN recommendation: 0899424090

Vatican II

Decrees of the Second Vatican Council (A.D. 1962-65), summoned by Pope John XXIII. A Council of renewal by which the Church is called to reach out to the Modern world in solidarity – presenting Christ as the relevant Truth even in the present age. Image above links to Vatican translations. ISBN recommendation: 0-87840-490-2

Herbert J. Thurston, S.J. and Donald Attwater: Butler’s Lives of the Saints

A 2,932 page collection of 2,565 scholarly, informative, and edifying Catholic hagiographical introductions arranged according to date of feast day. A 1956 enlargement, revision, and update of Rev. Alban Butler’s The Lives of the Fathers, Martyrs, and Other Principal Saints, Compiled from Original Monuments and Authentic Records. Image links to online version of original Rev. Butler collection. ISBN recommendation: 0-87061-1372