I drove my mother mad, plonking the book on the ironing board and asking her to help me with reading so she sent me to school just before my 5th birthday. I remember the book with its little two-word sentences. There was a picture of a child balancing on something (a stool, a chair) and underneath it said "I am up. I am on it."
At school we read Ladybird books. I remember writing exercises, copying from cards, and reading books being passed around the class. You could sit quietly and read when you had finished your exercises.
I made sure my boys could read English before they started school because I reckoned it was much harder than German, and they picked up German reading before school on their own.
I hate the German system where they are forbidden to read before they start school. Kindergarten teachers have no training in the 3 R's. They say that "the children should be allowed to play".
I don't remember being able to read stunting my ability to play! Quite the opposite.
Now we have our DGS 3 days a week. He has just started school and is learning the conventional way to read. He is doing well under the patient tutelage of my DH.
He lived in America until last summer, and there they had no qualms about teaching them to read. His parents, too, played many reading and number games (in English). That has been neglected a bit since he started school, but if I look at an English text with him, it comes back and he reads quite fluently.
I will be fascinated to see how he does sums in his head in a couple of years. One big giveaway as to what someone's mother tongue is, is to what language they tot up with. He swaps from German to English, depending on whether I or DH are supervising his school work, and he is just as quick with numbers in Italian.