You will love it! My sister isn’t Catholic and she likes it so much more than the Novus Ordo. First, you’ll see reverent adults with well behaved children. You should show up in a dress/skirt and wear a veil, but it’s not mandatory. Definitely bring a missal and follow along if you can. The first few times I went I pretty much observed; it’s easier to follow along if you can at least hear the priest and altar server alternating-that’s pretty much how I keep from getting ahead or behind. The readings are different, and the priest might not read it in the venacular-it isn’t mandatory that he does it, so after the Gospel (in Latin) he may just go straight to the homily (which, technically, isn’t mandatory either:o) Communion is received kneeling at the altar rail on the tongue, the priest reads the final Gospel, and the Ave, Salve, and St. Michael prayer, followed by the Sacred Heart of Jesus ejaculation.
Oh, some parts of the Mass the priest will be saying the prayers quiety-this in normal, and was actually supposed to carry on to the Novus Ordo, but anyway…if you can’t hear him during some parts, it’s okay, we’re not supposed to.