The thread title and the post do not match.
According to the NT Jesus was the Word and the Word became flesh. Therefore, no one taught Jesus the Scriptures, rather it was Jesus that gave us the Scriptures.
No one knows, His life is pretty much a ‘tabula rasa’ until the age of 24 or so.
But there are many theories.
Who taught Jesus to cure blindness, raise the dead, and forgive sins?
Nobody “taught” Jesus. He is God.
Who wrongly made Jesus turn water into wine?
I don’t feel sure about that picture. Look at the scroll trailing off on the floor like that. I don’t think the Torah, in a first century observant Jewish household, would have been treated like a roll of paper towels.
More likely the revered Scriptures would have been kept at the local synagogue and carefully stored by the attendant until they were taken out for reading.
I imagine Joseph would have been involved in teaching the Christ child the holy writings at the local synagogue.