Nobody expects you to keep up. Sit near someone who looks like they know what they're doing and follow their body - when they stand, stand.
A few things that surprise newcomers. Everyone davens at their own pace, out loud and quietly, so the room sounds like overlapping murmuring rather than unison. That is normal, not chaos. People come and go mid-service. Nobody is watching you. If you are on Level 1 and the room is on page forty, say your Level 1 and mean it - that is worth more than skimming everything.
KavanahThe Rebbe was asked why a person should daven with a minyan when he concentrates better alone. The answer: alone you bring your own prayer. With a minyan you are carried by everyone else's, including people whose prayer is better than yours.
You are not there to perform. You are there to be counted.
Responses You Answer
You do not need to know the whole service to participate. Learn these five and you are genuinely part of the minyan.
1. Amen - after any blessing you hear someone else finish. Say it after they say God's name and the closing word, not over them.
2. Barchu - leader says Barchu et Adonai ham'vorach; you answer Baruch Adonai ham'vorach l'olam va'ed, bowing at Baruch.
3. Amen y'hei sh'mei raba - the response in Kaddish, said aloud and with force. The Talmud says it can tip a person's judgment. If you learn one thing, learn this one.
4. Kedusha - feet together, rise on your toes at Kadosh kadosh kadosh, at Baruch k'vod, and at Yimloch.
5. Modim - when the leader reaches Modim in the repetition, everyone bows and says their own short version quietly. Bow when the room bows.
The Lord shall reign forever, your God, O Zion, throughout all generations. Praise the Lord.
When Not To Interrupt
Four places where you finish what you are saying rather than answering, even to Amen.
1. Between ga'al Yisrael and the Amidah. No pause at all, not even Amen.
2. Inside the Amidah. Nothing, from the three steps forward to the three steps back. If someone speaks to you, do not answer. If the room says Kedusha while you are mid-Amidah, stand still and listen without responding.
3. Between the tefillin blessing and the head tefillin.
4. Between a blessing and the thing it is on - blessing the tallit and wrapping it, blessing tzitzit and putting them on.
Everywhere else in Pesukei DeZimrah you may answer Amen, Barchu and Kedusha, but not converse.
Words You Will Hear
A short glossary so nothing stops you.
Daven - pray (Yiddish). Nusach - the version of the liturgy a community uses; Chabad uses Nusach Ari. Minyan - ten adult Jewish men, the quorum for Barchu, Kedusha and Kaddish. Chazzan / baal tefillah - the one leading. Amidah / Shemoneh Esrei - the standing prayer; same thing. Bracha - blessing. Kavanah - intention, what you are thinking while saying it. Hefsek - an interruption in the wrong place. Aliyah - being called up to the Torah. Gabbai - the one running the floor; ask him anything. Siddur - prayer book. Tehillat Hashem - the Chabad siddur, the blue one on the shelf.
KavanahYou will hear a gutten, yasher koach, gut Shabbos. Nobody expects you to have the vocabulary. Asking is normal and no one thinks less of you for it - most of the room learned this the same way.
If You Arrive Late
Do not start at the beginning and race. Skip forward to catch the Amidah with the minyan, then fill in what you missed afterward.
Priority order when the room is ahead of you: Shema and its blessings, then the Amidah with the minyan. Those are the obligations. If you have a few minutes before them, say Baruch She'amar, Ashrei, Yishtabach and skip the psalms in between - that is a legitimate short Pesukei DeZimrah, not a shortcut you invented.
Birkot HaShachar and Birkot HaTorah can be said afterward if you truly missed them. Shema has a deadline; check the time before deciding what to drop.