Guidelines for Lay Preaching - Set forth by the Diocese of Great Falls-Billings. Summarizes canon law, establishes diocesan norms. Does not appear to account for a parish with a lay pastoral coordinator but no resident priest. - http://www.dioceseofgfb.org/Diocesan_%20Policies/guidelines_for_lay_preaching.htm
What Is a Homily? - Fr. Phil Bloom outlines four purposes of a Catholic homily. - http://sycophants.info/homily.html
Catholic Association of Teachers of Homiletics - Promotes the study of Catholic homiletics, the formation of priests, and the development of homiletics programs at universities. - http://www.cathomiletics.org/
Catholic Encyclopedia: Homily - Etymology, early development. Also a summary of four ways of preaching on Scripture. - http://www.newadvent.org/cathen/07448a.htm
Partners in Preaching - Nonprofit training and formation organization in the United States which prepares women and men, ordained and lay, for the ministry of liturgical preaching. - http://www.partnersinpreaching.org/
Krysallis - Homiletic service in English and Spanish, based on liberation theology. Free. Proposes "liberation preaching" as an expression of the prophetic nature of ministry. - http://www.krysallis.com/