Matthew's Gospel tells a different story about the early years in the life of Jesus. In this story, Bethlehem was the home town of Joseph and Mary, but they fled from there to Egypt out of fear of King Herod, who wanted to kill Jesus. After Herod died, presumably some years later, they began the return journey to Bethlehem but, being warned about Herod's son and successor, Archalaus, in a dream, turned aside and travelled to Galilee where they settled in a city called Nazareth. In this story, the young family could not have travelled to Jerusalem until after Archelaus was eventually deposed and Jesus was quite a few years old. However, there were synagogues in Egypt when Jesus was a child, and no doubt he would have visited these whenever possible.
Jesus was 12 years old in the Temple scene in Luke Chapter 2. However, he did not have a Bar Mitzvah because the Jewish ritual of Bar Mitzvah only began in the 1300s.
As an observant Jew of his time of course he did, however according to the Gospels by age 12 he was astounding the educated Rabbis in the Synagogue with his knowledge of the scripture. No authoritative source addresses anything about his youth beyond his visit to Jerusalem and teaching the learned people in the temple when he was around 12, We may assume that since all boys of his time were expected to spend some time learning in the synagogue that Jesus did as well, but that is only an assumption.
In the time of Jesus in Israel the religious houses were called synagogues, and yes Jesus preached in these. In Luke 4:16-30 is the story of Jesus going to the town he was raised in and preaching in that synagogue.
he was just a newborn child
Jesus preached His first sermon in the book of Matthew. It starts in chapter 5 of Matthew.
Please clarify your question. Which synagogue are you speaking about?
Synagogue probably
There is no minimum age.
Yes. Medvedev visited a synagogue in Birobidjan. See the Related Link below.
Benedict xv1
The house of prayer used by Jews is known as a synagogue.
People would visit a Temple or a Synagogue because they knew if they got rid of their sins then they would be accepted into heaven. Back in the time of Jesus it was a thing to do if you went to Jerusalem to go and see a temple and to get rid of your sins
The first Jesus taught was in the Synagogue. Then he was just 12 years old.