For boys they have to be 13 to read the Torah but for girls they have to be 12 to read it publicly. However, children start studying Torah by first grade so around 6 years old.
The Torah is divided into weekly readings, called "parshas". One system divides the text so the entire Torah is read in one year, another system is based on a three-year cycle. So at least in theory, all portions are read in equal amounts.
so they could learn more and more about torah
While some Jews read Torah at home, a surprising amount do not. However, there is a tradition which is kept by most Jews, it is called a Torah portion. The Torah portion is read weekely and is designed so the Torah can be read in 3 years, it also contains an additional read generally from the prophets. An example of a Torah portion is seen below, it is from this past Sabbath's reading.... Mishpatim: "Judgements" February 12/13 2010 - 29 Shvat 5770 Torah- Exd. 21:1 - 24:18 Halftarah- Jer. 34:8-22, 33:25-26
so they could learn more and more about torah
The Torah establishes the Sabbath with commandments to keep the Sabbath day, to remember the Sabbath day, and constraining what may be done on the Sabbath. And, in the Jewish liturgy that emerged from this framework, the Sabbath morning service includes a Torah reading where, traditionally, about 1/52 of the Torah is read, so that over the course of the year, every Jew who attends Sabbath services on a regular basis will hear (and, we hope, learn from) the entire Torah.
Any adult Jewish male who observes Judaism in his personal life, and is capable of learning the reading of the portion of Torah and rendering it properly in public, is permitted to read the Torah at the service during which it is read.
It is not so difficult, if you learn it briefy or if you have so much inteest, it will be easy !
It is used for reading the Torah out loud during the service!
Jews keep the Torah in a separate room and when they need it the Jews can't touch it so they use a pointer when they read from it. I hope that helps
So you can read books and learn
A slave might have learned to read and write by seeing writings all around and they copy it and write it down. They learn to read by pronouncing the letters that they know, so they learn to read like that.