Sacraments

There are seven sacraments in the Church: Baptism, Confirmation or Chrismation, Eucharist, Penance, Anointing of the Sick, Holy Orders, and Matrimony. The sacraments the Church celebrates are signs of grace that make a deeper reality present to us. One reality we encounter through the sacraments is Christ's presence in the Church community, his body. This recognition of Christ's presence in the community should lead to a stronger awareness of being sent on mission to engage in concrete, love-inspired action in the world.  (CCC 1113)

More info:
Baptism
1st Sacraments (Communion & Reconciliation)
Marriage Prep
RCIA (becoming Catholic)