Catechism of Pope St. Pius X (CPX) p. 85-86.  Q/A 19-24:  The effects and the necessity of the sacrament of penance and the disposition to receive it properly.

– The pneumonic to memorize is C-CAP:  Contrition, Confession, Absolution, Penance.

– 15 Mortal Sins Catholics Are Missing in Their Confessions (blog):  https://padreperegrino.org/2019/08/mortalsins/

– Tips on making a good confession (video): https://youtu.be/QICKUkEj5WM

– How to Make A General Confession (video):  https://www.youtube.com/watch?v=6u1ZjJMBTiw