Baptism of the Holy Spirit is the outpouring of the Spirit, a deeper relationship with God. Is not a sacrament; however, it is part of the Baptism and Confirmation sacraments. In Baptism we are freed from sin and reborn as sons of God; we become members of Christ, are incorporated into the Church and made sharers in her mission: "Baptism is the sacrament of regeneration through water in the word."
In Confirmation the Holy Spirit comes upon the person. In Acts 8: 14-19, " Now when the apostles in Jerusalem heard that Samara had accepted the word of God, they sent them Peter and John, who went down and prayed for them, that they might receive the holy spirit. For it had not yet fallen upon any of them; they only have been baptized in the name of the Lord Jesus. Then they laid hands on them, and they received the holy spirit."
In Acts 1:8 "But you will receive power when the Holy Spirit comes upon you, and you will be my witnesses in Jerusalem, throughout Judea and Samaria, and to the end of the earth."
When you accept Jesus Christ into your life and are committed to becoming his servant just like the apostles, you will receive the gifts and fruit of the Holy Spirit.
The gifts of the Holy Spirit. There are seven gifts of the Holy Spirit. Isaiah 11:2 "The Spirit of the Lord shall rest upon him: a spirit of wisdom and understanding. A spirit of counsel and of strength, a spirit of knowledge and fear of the Lord." And piety was added to make it seven.
The fruit of the Holy Spirit. There are nine biblical fruits of the Holy Spirit as given by St. Paul in his letter to the Galatians 5:22-23: “love, joy, peace, patience, kindness, generosity, faithfulness, gentleness, and self-control.”