How to Go to Confession: A Step by Step Guide

Before going to confession it is a good idea to examine you onscience to help you better know what sins to confess.
HERE is a good Examination of Conscience

Enter the confessional and greet the priest.
Begin by making the sign of the cross and say “Bless me, Father, for I have sinned. It’s been [however many days/months/years] since my last confession.”

List your sins.
Mention venial (everyday) sins and mortal sins, which are more serious. Try to be thorough, but it’s OK if you don’t remember every single sin. It may be more of a conversation, as the priest may ask questions or comment. It doesn’t have to be a non-stop laundry list of sins. When you’re done, conclude by saying “I’m sorry for these and all my sins.”
Reminder: Mortal sins are sins that meet all three of these conditions:
1. It is a serious sin (often one of the 10 commandments)
2. You have full knowledge that it is a serious sin
3. You commit the sin with full consent of your will
Thus, a Mortal sin is a sin that you know is serious and you do it on purpose.
All sins that do not meet all three conditions are vinyl (smaller) sins.

Listen to the priest.
When you’re done confessing your sins, the priest may offer some guidance and suggest ways to avoid sins in the future. He’ll then give you a penance, which could be a form of prayer, a service or some work of mercy. Often, you’ll be able to complete your penance while still at church.

Pray the Act of Contrition.
This prayer is short and simple:
My God, I am sorry for my sins with all my heart. In choosing to do wrong and failing to do good, I have sinned against You whom I should love above all things. I firmly intend, with Your help, to do penance, to sin no more, and to avoid whatever leads me to sin. Our Savior Jesus Christ suffered and died for us. In his name, my God, have mercy.

Receive absolution from God, via the priest.
The priest will say the following prayer to absolve you of your sins:
God, the Father of mercies, through the death and the resurrection of His Son has reconciled the world to Himself and sent the Holy Spirit among us for the forgiveness of sins; through the ministry of the Church may God give you pardon and peace, and I absolve you from your sins in the name of the Father, and of the Son and of the Holy Spirit.
Make the sign of the cross and close with Amen.

Depart and fulfill your act of penance.
Find a space in the church or another quiet place and fulfill your penance that the priest give you by the end of the day.