“You will eat and you will be satisfied, and bless HASHEM, your God, for the good Land that He gave you.” — Devarim/Deuteronomy 8:10
Mazon, “A Jewish Response to Hunger,” offers educational resources, including weekly Torah study, regarding food and hunger.
Our Rabbis taught: Where is the saying of grace intimated in the Torah? In the verse, And thou shalt eat and be satisfied and bless. (B. Berakhot 48b)
Birkat hamazon, grace after meals, or — more literally — “food blessing,” is discussed a great deal in the Talmud tractate Berakhot. A nice explanation of its components, as well as links to further study, can be found at Wikipedia, and the Reconstructionist Federation provides a meditation on being satisfied.
The Union for Reform Judaism provides print and audio for the Shabbat versions of grace after meals. Kolot, the Center for Jewish Women’s and Gender Studies, offers both feminine and masculine versions — in print and audio — of the related blessings BEFORE meals, also in the context of Shabbat.
Inviting others to recite grace after meals — zimmun (or zimun) — is presented with different formulations for calling three, ten, 100, 1000, or 10,000 to bless (B. Berakhot 49b).
Women’s obligation in birkat hamazon is discussed in the same tractate, pages 20a and 20b, 45a and 45b. The Jewish Orthodox Feminist Association is a great source for contemporary discussion of women and zimmun.