Archdiocese of Detroit
U.S. Bishops (includes the Bible and the Catechism, free online)
Vatican (NEW: the Compendium of the Catechism)

Readings and Prayers:

Liturgy of Hours
Readings (US Conference of Catholic Bishops)

More Catholic Links:

Michigan Catholic Conference (political issues & elections info)
Retrouvaille (a Lifeline for Troubled Marriages)
VIRTUS Online (Protecting God's Children)

Neighboring Parishes:

Northwest Wayne Vicariate
MassTimes.org (list of local parishes' contact info & Mass times)

Knights of Columbus:

State Council;   Supreme -  (parent organization sites)
Locate a council