The highlight of Simchat Torah (“The Joy of the Torah”) is the hakafot, held on both the eve and the morning of Simchat Torah, in which we march and dance with the Torah scrolls around the reading table in the synagogue.
On this joyous day when we conclude the Torah, it is customary for every man to take part in the celebration by receiving an aliyah. The children, too, receive an aliyah!
After the final aliyah of the Torah, we immediately begin a new cycle from the beginning of Genesis (from a second Torah scroll); this is because as soon as we conclude studying the Torah, G‑d’s infinite wisdom, on one level, we immediately start again, this time to discover new and loftier interpretations.