Source for using an animal's horn, specifically: Rosh HaShanah 33b
Whether women are obligated: Rosh HaShanah 30a
Preparation of associated necessities for the blowing of the Horn on Shabbat: Shabbat 131a-b
Whether lack of the blessings prevents fulfilling the Mitzvah of the Horn, and vice versa: Rosh HaShanah 34b
Blowing the Horn on Shabbat: Rosh HaShanah 30a
Which blessings to make: Rosh HaShanah 26b, 27a, 29a, 30a
Who is required to blow the Horn, under various circumstances: Rosh HaShanah 30a
The blasts are indentical to those of Rosh HaShanah: Rosh HaShanah 33b-34a