iBreviary, DivineOffice.org, and Universalis.com apps all have the proper prayers and readings for this day. I notice that iBreivary actually has two choices for the second reading in today's Office of Readings. The first is the original account of Our Lady's appearance at Tepeyac Hill. The alternative is from a 1970 message to the Mexican people from Blessed Pope Paul VI about the spiritual and social application of Our Lady's message. Both are worth reading.
In the Good News department: I've just received inquires from a gentleman in Belarus about a new e-breviary Belarusian website, and his desire to translate and publish The Everyday Catholic's Guide to the Liturgy of the Hours in that nation.
As always, any questions about how to pray or understand the Liturgy of the Hours are welcome here.