Individuals can find novena prayers online on Catholic.org, Pray More Novenas and EWTN. All these websites list hundreds of novena prayers dedicated to various saints and angels.
A novena prayer consists of public or private prayers that Catholics repeat for 9 successive days. The practice derives from an ancient Greek and Roman custom where families used to mourn the death of a loved one for 9 days.
Novenas can be performed at home or in church. They are not exclusive to Catholic Christians, with some Anglican and Orthodox Christians performing them as well. Examples of novenas one can find online include novenas for mourning, novenas in anticipation of Christmas and novenas of grace.