(see MASS below)
The three Sacraments of Christian Initiation—Baptism, Confirmation, and Holy Eucharist—together form the process of sacramental initiation into the Church. If this will be your First Holy Communion, it will mark your wonderful beginning of sharing at the table of the Lord with the whole Church at your local parish.
Our parishes offer our families sacramental preparation that prepares them for First Holy Communion. The preparation process takes place usually around seven years of age or otherwise as determined by the pastor. Whether or not their children attend a Catholic school, the parents are to register their family for the preparation at their parish.
 Lumen Gentium, 11.
 Gravissimum Educationis, 3
 Lumen Fidei, 43.
 Familiaris Consortio, 52; cf. Evangelii Nuntiandi, 71.
 For common examples, see the Archdiocesan resource Invited to the Feast, especially pp. 21-22.?
In the Eucharist, Jesus Christ, the Risen Saviour, meets us visibly and personally in the power of the Holy Spirit. Cardinal Collins puts it this way:
Until Christ comes in glory, there is no more intense way of experiencing His presence than receiving Him in Holy Communion. This is not "holy bread" that reminds us of Jesus. This is Jesus, sacramentally present to be with us on our journey.
"Jesus offered himself on Calvary in generous, unselfish love, in the midst of evil—giving and not counting the cost".. Because of Him, we know what our eternal identity is: To be His witnesses by our love in action. "We love because He first loved us." (1 John 4:19)
In one sense, we can say that Mass never ends because Jesus sends us forth in our mission of service with the reassuring word: Go
The Eucharist completes Christian initiation. Baptism, Confirmation, and Eucharist make us full members of the Church. This also brings with it responsibility and so the Church obliges the faithful to take part in the Mass on Sundays.
 Thomas Cardinal Collins, Cornerstones of Faith. Reconciliation, Eucharist and Stewardship (Toronto, Canada: Novalis, 2013), p. 47.
 Ibid., p. 45.
 St. John Paul II, Ecclesia de Eucharistia, 34.
 Redemptionis Sacramentum, 133.
 Redemptionis Sacramentum, 109.
 Cf. Les Miller, Sacraments and Signs (Toronto, Canada: Novalis, 2014), p. 4.
 Cf. Pope Emeritus Benedict XVI, The Spirit of the Liturgy (San Francisco, USA: Ignatius, 2000), pp. 184-216.
[8?] Cornerstone, pp. 59-64.
To learn more about First Holy Eucharist/First Holy Communion, these resources may help: