The first step is finding a parish, and when they offer sacramental reconciliation. Look at the parish website and find what their “confession hours” are. You could also call and set up an appointment for confession if the offered times do not work, or if you just feel like you need some more time. Call and ask to speak to the pastor or a priest.
If you live in the Rochester area, the Co-Cathedral of St. John the Evangelist is coordinating “24 Hours for the Lord,” with priests available to hear confessions from 4pm, Friday March 29th through 4pm, Saturday March 30th. All are welcome!