The bible employs varied symbols to disclose the mystery of the Holy Spirit. Important symbols of the Holy Spirit include fire, anointing and a dove.
The Lord Jesus communicated the Gift of the Holy Spirit to His Apostles after He rose from the dead. Jesus reveals that the Holy Spirit is a Person. The Holy Spirit is the third Person of the Blessed Trinity.
He reminds us what Jesus taught and bears witness to Jesus (cf. John 14:26, 15:26). The Holy Spirit can renew our souls and minds.
He can help us to pray (cf. Rom 8:26) and desires to bring us to deeper communion with the Heavenly Father and the Son. We can always pray the simple words, "Come, Holy Spirit". (Image is depiction of Pentecost)
In this funny clip Chris Padgett teaches about the Holy Spirit: