We follow the Revised Common Lectionary at Saint Peter's, which is a three-year cycle of readings from the Old and New Testaments read each Sunday. For this Lectionary, as well as the Eucharistic readings for Saints' and other Holy Days, go to http://lectionarypage.net/. Check back again soon for more details and resources.
We also use a separate Lectionary for readings during the Daily Office (Morning and Evening Prayer). More details on that to come soon.