When the child becomes old enough to read on their own, have a set 'bedtime' where the child must be in bed. But allow them to keep the light on, and stay awake as long as they are reading. No reading means no light. My parents did that with me. As a child I would get upset that I had to go to bed so I would get revenge by staying up late reading. I always wound up falling asleep, at a reasonable time, while reading. It eventually became such a habit that I could not sleep without a book. I was reading adult level novels by the time I was in regular school. Not because of genius, but because of my parents manipulation.
I've seen this trick work on other children as well, and never fail.
I couldn't tell you what was first. It's been a continuous thing that goes back further than my memories do.
My mother was an avid reader, and would read to me each night when I was too young to read for myself. That probably helped start things. Once I was old enough, she made me do the reading and 'helped'. Then she told me I was old enough to do it myself so 'get to bed you little shit'.
The earliest book that I can remember was Pet Sematary by Seven King.
It made one hell of an impression on me. I didn't sleep for a month. I guess that's why I remember it.
I was already in school by then. I know I started with simpler books and worked up to that, I just don't remember which ones.
I learned to read at home by following the finger while my parents would read out loud.