Tractate Yoma
Mishnah Yoma, the sixteenth tractate of Seder Moed, describes the High Priest's service on Yom Kippur, down to the goat sent to Azazel. It has 8 chapters and 61 mishnayot.
Yoma - Chapter 1 The seven days of preparation of the High Priest before Yom Kippur.
Yoma - Chapter 2 The lottery assigning the duties of the daily Temple service.
Yoma - Chapter 3 The ritual immersions and changes of garments of the High Priest during the day.
Yoma - Chapter 4 The lottery of the two goats of Yom Kippur.
Yoma - Chapter 5 The order of the service inside the Holy of Holies.
Yoma - Chapter 6 The goat sent to Azazel.
Yoma - Chapter 7 The reading of the Torah by the High Priest and the rest of the service.
Yoma - Chapter 8 The laws of the Yom Kippur fast and those exempt from it.
Talmud Bavli