The Shabbat after Simchat Torah is Shabbat Bereishit -- "Shabbat of Beginning" -- the first Shabbat of the annual Torah reading cycle, on which the Torah section of Bereishit ("In the Beginning") is read.

The weekly Torah reading is what defines the Jewish week, serving as the guide and point of reference for the week's events, deeds and decisions; Rabbi Schneur Zalman of Liadi called this "living with the times." Hence the theme and tone of this week is one of beginning and renewal, as we launch into yet another cycle of Torah life. The Rebbes of Chabad would say: "As one establishes oneself on Shabbat Bereishit, so goes the rest of the year."

Chabad.org on Shabbos Bereishit

The Shabbat after Simchat Torah is Shabbat Bereishit — “Shabbat of Beginning” — the first Shabbat of the annual Torah reading cycle, on which the Torah section of Bereishit (“In the Beginning”) is read.

The weekly Torah reading is what defines the Jewish week, serving as the guide and point of reference for the week’s events, deeds and decisions; Rabbi Schneur Zalman of Liadi called this “living with the times.” Hence the theme and tone of this week is one of beginning and renewal, as we launch into yet another cycle of Torah life. The Rebbes of Chabad would say: “As one establishes oneself on Shabbat Bereishit, so goes the rest of the year.”