There are three Sacraments of Initiation in the Catholic Church.
The first is BAPTISM, this sacrament makes us members of God's family and the Roman Catholic Church.

The other two sacraments are EUCHARIST and CONFIRMATION.
 
The process for preparing for the Sacrament of Baptism differs depending on the age of the person receiving the sacrament:
  I.  INFANT to 6 YEARS
  II. 7 YEARS to 17 YEARS
III. 18 YEARS and older