Christos voskrese! Khristós Anésti! al-Masīḥ qām!
Do Eastern Churches / Western Churches (E/W) recite the same Creed? !
You seem to be English speaking so come Advent 2011 you will return to beginning the Creed as we and the rest of the Catholic Church does, with “I believe…”

In the East it’s called The Symbol of Faith.
This is what we pray in my Church. It is sung, like the rest of the Liturgy.
Do we (E/W) each have a Liturgy of the Word and a Liturgy of the Eucharist at Mass?
2.1 Liturgy of Preparation
2.2 Liturgy of the Catechumens
2.3 Liturgy of the Faithful
The Liturgy of Preparation is done before more public part of the Divine Liturgy begins and is done out of view behind the iconostasis. Someone will be chanting the Hours while the Liturgy of Preparation is done. There is an interchange between the chanting of the Hours and the priest engaged in the Liturgy of Preparation. He periodically will respond, mainly after the 2 recitations of the Our Father.
For Russians the clergy commune with the curtain pulled so we do no see them communing except at Pascha.
Throughout the Church every Sunday is Pascha/Easter and celebrated with that joy. During Great Lent we do not celebrate the Divine Liturgy on other days because the Liturgy (“Mass”) is truly a joyful celebration and inconsistent with the strict fasting and devotions of Great Lent, a the season of repentance. We have
Liturgy of the Presanctified Gifts Wednesdays and Fridays in Great Lent, for the spiritual nourishment needed during this solemn time. When the Annunciation falls during Great Lent, as it did this year on Friday March 25, we have the Divine Liturgy of St. Basil (as we do throughout Lent) and fasting is forbidden-- ie we can eat fish and drink wine!

We may not eat fish, dairy, eggs, meat however any day during Great Lent beginning with no meat after Meatfare Sunday, and no dairy and eggs after Cheesefare Sunday. Other Eastern Churches have different fasting practices, usually less strict.
Do we (E/W) follow the same Liturgical Year?
We have
Twelve Great Feasts and four major Fasting periods.*
My parish is on the revised Julian Calendar so we celebrate Pascha on the Old Calendar. Some parishes are entirely on the Old Calendar. Some are entirely on the New Calendar, which the secular world follows, as does the Latin Church.
Different Churches have different Feast days for the Saints of their Churches. And the readings are specific to the Church. For example, the Melkites have different daily readings from us-- we follow the
OCA readings.
Do we (E/W) all teach Transubstantiation?
We believe “…
that after the consecration of the bread and of the wine, the bread is transmuted, transubstantiated, converted and transformed into the true Body Itself of the Lord…”
“When” consecration takes place during the Divine Liturgy is not defined.
(Holy Eucharist is under both species with the consecrated bread (leavened) present in the consecrated wine delivered into our mouths by the priest using a tiny gold spoon, Some Churches, Melkites for example, the priest intincts each individual piece of consecrated bread and places that into the communicants mouth.)
Do we (E/W) all use the Catechism of the Catholic Church?
When I took a class for catechists in the Latin Diocese of Oakland on the Holy Mysteries with
Fr. Anthony, (Ruthenian) he said that the CCC is a Catechism for the Latin Church. I completely agree. It makes use of Eastern Sources but it is clearly a product of the approach of the Latin Church. I like the
Living God: A Catechism for the Christian Faith - Volumes 1 & 2,
I also like the
“Light for Life” series in three separate books: “The Mystery Believed”, “The Mystery Celebrated”, “the Mystery Lived”.
Please add in your own detail and information that I haven’t considered.
I always recommend the
“Your Word From The Wise” interviews Catherine Alexander did with the monks of Holy Resurrection Romanian Catholic Monastery:
Eastern Catholic Theology Part 1 and Part 2 with Fr. Abbot Nicholas of Holy Resurrection Monastery
“Who are Eastern Catholics?” Part 1 and Part 2 with Fr. Maximos
*Fasting in the Byzantine Church Year with Fr. Moses
*Feasting in the Byzantine Church Year with Fr. Moses
Click on “… (more info)” to see the specific questions Catherine asks in each segment.
Also,
St Elias Ukrainian Catholic Church in ON has an excellent site.
"12 Things I Wish I’d Known…First Visit to an Orthodox Church" by Khouria Frederica Mathewes-Green is often recommended.
Deacons in the ECCs have a very different role from that of the deacons in the Latin Church. We call both priests and deacons “Father”.
You’re welcome. The best thing for learning about ECCs is to go visit one.
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