I'm only addressing teaching himself to read at two:
Check out "How Teach your baby to read" by Glen Doman.
He makes the case that it is pretty much an inmate ability if encouraged correctly.
The method has been around long enough to have some backing and witness, but it doesn't actually seem to confer much long term advantage.
I ended up not using it with my kids after feedback from a friend and some further reading.
My understanding is that for most people intelligence isn't a result of starting early, but rather having the brain finish late - i.e. remaining plastic longer.
I wasn't prepared for how innate verbal language, specifically stories, are. My kid would come home from preschool and accurately recite ten minute long books, full of unknown words, the same way I idly hum a tune. It was a lightbulb moment for me- I had always wondered how oral tradition could possibly hold up over centuries, but my god we're wired for it.
Check out "How Teach your baby to read" by Glen Doman.
He makes the case that it is pretty much an inmate ability if encouraged correctly.
The method has been around long enough to have some backing and witness, but it doesn't actually seem to confer much long term advantage.
I ended up not using it with my kids after feedback from a friend and some further reading.
My understanding is that for most people intelligence isn't a result of starting early, but rather having the brain finish late - i.e. remaining plastic longer.