point about confession is well taken, you must be in a state of grace.
can’t for the life of me understand why your sacramental preparation has not included a session for candidates and sponsors on the specifics of the sacrament itself, and on the action of the Holy Spirit. Please tell me your sessions were not all about introspection, exploring your feelings and hand-holding.
I hope somebody with skills finds and posts a link to the actual rite here before long, but if it is on Pentecost it will be in the context of a Mass, before the gospel the pastor or representative will present the candidates to the bishop. The bishop and priests present will pray for the candidates, and the sponsors, parents and assembly will also be invited to pray for them. After the Gospel and a homily from the Bishop on some aspect of the sacrament, he will lay hands on each candidate, or extend his hands over the whole group if there are a lot of people, and invoke the Holy Spirit. the profession of faith may be either before or after the Gospel.
Each candidate will be called to come forward with their sponsor, and the bishop will anoint each candidate on the forehead with holy chrism oil which was blessed just before Easter in a special Mass. He will say Receive the Holy Spirit, (your name, which should be on a legible nametag on your shoulder so he can read it) and end with Peace be with you. Reply is “and also with you”. Sponsor has his hand on your shoulder during this rite. There will be a deacon or another priest there who directs the movement of candidates and sponsors. Please warn your relatives, no pictures should be taken during Mass. Often the bishop is willing to pose for pictures after Mass unless the group is too big.
the Mass continues as usual from this point. If there are a great number of candidates, the bishop may delegate other senior priests to assist, and candidates will go to any of the priests as directed by the ushers.
The effects of the sacrament are that it completes our baptism and our Christian initiation, strengthens our faith and the indwelling of the Holy Spirit first received at baptism. The Holy Spirit endows us with His gifts, wisdom, understanding, knowledge, counsel, fortitude, piety, and fear of the Lord. These gifts strengthen the individual and promote his spiritual growth. The Spirit also endows us with the charismatic gifts, used for building up the Church, by which we become more effective disciples and evangelizers according to our own gifts and talents. We are strengthened against temptation, and against persecution.
read the relevant chapters of the CCC on the Holy Spirit, in the first section on the Creed, and on the Sacrament of Confirmation in the liturgy and sacraments section.