Eucharistic Adoration is basically spending time before and praying before, the Blessed Lord who is really and truly present in the Blessed Sacrament. During Eucharistic Adoration the Blessed Sacrament is exposed(that is presented for adoration) in a monstrance, usually on an altar for the faithful to pray in front of and spend time with with our Lord in a definitive way.
It is a blessing for any parish to have Eucharistic Adoration and the best way to begin is to speak to your parish priest(pastor) and see if it could be started in your parish. Alternatively if your parish already has Eucharistic Adoration at some point during the week, just go along and spend time in the Lords presence. As Peter said to Jesus at the transfiguration “Lord it is good for us to be here”
I must say though ,I doubt anyone this side of heaven can fully explain Eucharistic Adoration.
God Bless