Here’s some free advice FWIW:
(1) Look the part. If you are a Mr. Mooster, iron a shirt, consider a tie. If you are a Miss/Mrs. Mooster, a dress or a skirt is appropriate. If you don’t own a chapel veil, don’t worry. No one is going to say anything to you. I don’t think they’ll kick you out if you’re wearing jeans, but it’s not really appropriate. This goes for Ordinary Mass too, by the way.
(2) I wouldn’t bother with a missal for the first couple times. Most parishes have a little red “Eccleisia Dei” booklet by the door; it’s a loaner-script that you can use. For your first TLM, you’re going to be so far lost that you’ll spend more time flipping in the book than praying along with the Mass that it’s really not worth it. Just go and trust that Father’s going to do it right.
(3) There’s no “sign of peace” that the congregation does… since you’re new to the Church, you probably know about the “SoP ambush” where all of a sudden, Mass becomes interactive. At the TLM, you can pray along with the Mass without any crazy interruptions.
(4) Sit in the middle, near the front. Close enough that you can really follow what’s going on; the TLM is subtle and quiet-- when you’re still learning it, get close enough to pay attention. But in the middle so you can pick out someone and just do what they do… but if you’re in RCIA, you’re probably pretty familiar with this technique.

The first few rows are often families with children-- trads know that the first row is where you put the antsy kids so they have something to focus on besides the people in the pew in front of them. The back rows are often places where people with babies sit, so the parents can stand up with a restless baby if they need it. The old churches don’t have cry rooms, so the back rows can be kind of a distraction.
(5) If you’re a reader and you’ve got a little time to wait for shipping, there’s a good book about the old Mass here:
angeluspress.org/oscatalog/item/8266/for-the-visitor-at-mass
I know it’s by the eeeeeeeeeeeeeeevil SSPX publishing house Angelus, but it’s a good book and a good book is a good book.
(6) Don’t worry, the homily isn’t in Latin.
(7) You probably won’t fall
instantly in love with the TLM. That’s trad-hype. The TLM is something you learn and grow closer to-- like beer, coffee and in-laws (they’re all bitter at first). I started going to the TLM for archeological reasons (
what did Mass look like?), then kept going for cultural, philosophical and theological reasons. I mean, it’s a beautiful Mass and all, but when people say that it doesn’t “click” with them, it’s because the TLM isn’t a “clicker” kind of deal.
(8) Believe it or not, not every parishoner has memorized every other parishoner. This is something that everyone thinks when they’re visiting a new church-- they feel like an infiltrator. If you’re like me and like to stay anonymous for a while, you’re safe. And no one’s watching you or judging your behavior-- except for the blue haired cranks, just about all us have been the newbies at the TLM and tried to figure it out for the first time. Don’t worry that someone’s staring.
(9) If you’re a reader and want the text ahead of time, Fisheaters is a good resource for this.
fisheaters.com/TLMinstructions.html
This may not help you at all, since it’s hard to picture it from the script, but some people like to know ahead of time.
(10) The “Catholic Calisthenics” is more intense than you’re used to (StandSitStandSitStandKneelStandKneelKneelKneelStandSit). It’s also probably longer than you’re used to-- I’m used to Ordinary Masses wrapping up in under an hour, usually about 45 minutes. The EF Mass can go for about an hour and a half. Depends somewhat on the priest. And when Father walks out after Mass, people kneel and pray after Mass for a few minutes, so don’t be surprised by that. It’s not uncommon to do a “Benediction” after Mass, which is a short series of prayers led by the priest… what I’m saying is that the TLM isn’t the easiest thing in the world if you’re used to a quickie service. I’m sure you’ll make it, Catholics worshipped this way for centuries and MOST of them didn’t die from it.
Enjoy your TLM! If you have any specific questions, fell free to PM me. :tiphat: