I was 8 when I gave my first Bible reading. It was 1954 and talks 2 and 3 of the TMS in those days were Bible readings. They said it was to help familiarize us with the NWT Bible of which we had only two volumes at the time, the Greek Scriptures and the first volume of the Hebrew Scriptures Genesis-Ruth.
In 1954 only brothers were enrolled in the school. So my devout JW mother pressured me to join the TMS because Billy, another member of our congregation, who was only 7 had already given several Bible readings.
My first reading was a couple of chapters in Leviticus. I don't remember which ones, just that I was so nervous that me legs felt like they were full of pins and needles.
Believe it or not, my next reading assignment was Judges 19 about the gang rape and murder of the Levite's concubine. Fortunately being only 8 years old I didn't really understand what I was reading. But as an adult and remembering that reading, I think it was improper that the TMS servant gave me that reading. But considering Watchtower history, one shouldn't be surprised.