 Now What? A Guide for New Catholics. We'll get a link to that posted for you so you can see it, have an eyeball on the cover. And basically here's what it is. It's a way for you, especially if you're coming into the Catholic Church, to understand why do Catholics do these things? What's with all the calisthenics at Mass? You sit, you stand. Why do you sit at this time? Why do you stand at that time?