but a link would be a starting point. as of now i have no idea what you guys are talking about and dont know what to search for.
You're right.
Sorry.
If you do use links, use EWTN, or Catholic links, or Vatican links.
You have to be careful (which is why I hate using the net) because some links are prejudiced and you'll only know what they want you to know.
Here are some:
https://catholicregister.org/item/15194-what-changed-at-vatican-ii
VATICAN II
Second Vatican Council - Wikipedia
Vatican Council II: light for the church and for the modern world
If you're going to ask Prof. Google, write
Vatican Council II
Changes in Vatican Council II
Vatican Council I was in about 1865 or thereabouts.
Vatican Council II was in 1965
There were also others, for instance the Council of Trent which was in about 1560 or so. It was to answer to the Protestant Reformation.
I'll tell you something I remember just off-hand. (I'm not Catholic anymore)
Before 1917 is was forbidden for a divorced person to ENTER a church.
After 1917 it became authorized by the church that a person could physically participate in a liturgy (the Mass) but not receive communion.
This was recently changed -- just one or two years ago.k
Divorced and remarried couples are not allowed to receive Communion under certain circumstances.
It's an interesting study, if you're up to it.
You might also want to check out the Didache (about 90 AD - an instructional manual as per the Apostles) and the Early Church Fathers, which are the very first theologians of the church.
For instance, Ignatius of Antioch knew and studied with John the Apostle. Polycarp, Clement, so many. I'm speaking of the pre- Nicene fathers, pre 325 AD.
Things started to go downhill after that.
The more we know, the better off we are.