Sooooooo.....does this mean that.....

So, is this ONLY applicable for the afterlife or does it tell you how to "score" in this life as well?  Or do you have to be a Mac-Daddy in this life to be a beginner in the next life or.....I'm confused.  I mean...I wanna do this right.  Do you have to be married not just "at death do you part" or do you have to be eternally married for this? Is it applicable after the resurrection or does it work before then?  Do you have to use contraceptives to keep a bunch of little ghosts from being born?  Maybe I should just read the book and find out....