What is an indulgence?
It is a total or partial remission of the temporal punishment which man would have to suffer either in this or the next life, after the sins have been remitted.
http://sspx.org/en/news-events/news/indulgences-churchs-treasury-merits-2420
another partial indulgence is reading from the Word. I really like that one b/c it makes you feel close to God and you begin to see things (or i do) in your life that maybe you didn't really see too well before, which means God is trying to tel u something... or that is what i get out of that anywya