What You {Catholics} Need to Know: Celibacy [Catholic/Orthodox Caucus]
What You {Catholics} Need to Know: Mass (Sacred Liturgy) [Catholic/Orthodox Caucus]
What You [Catholics] Need to Know: The Vatican (or Holy See) [Catholic-Orthodox Caucus]
What You [Catholics] Need to Know: Marriage
What You [Catholics] Need to Know: Eucharistic Mystery [Catholic/Orthodox Caucus]
What You [Catholics] Need to Know: Eucharist (Real Presence) [Catholic/Orthodox Caucus]
[What Every Catholic Needs to Know about] Gaining Indulgences [Catholic/Orthodox Caucus]
What You [Catholics] Need to Know: Deacons and the Diaconate[Catholic-Orthodox Caucus]
Great links here about the priesthood and the Sacrament of Holy Orders.