A great place to start is
iBreviary
or
Universalis
or
DivineOffice.org
the last of these included a podcast of the major hours each day, so you can hear the community praying.
The Divine Office is a series of prayerfull readings by an individual or community of the psalms. It follows a pattern throught the day, week and year.
Morning, evening and Night prayer especially are recommended to the laity. Members of many monasteries are required to pray all the hours. Secular Priests and Deacons are required to pray the major hours as appropriate to their other duties.
The basic format is
Introduction
- And my toungue shall announce thy praise
*Glory Be…
Antiphon
Introductory psalm (before the first hour of the day which is prayed)
Psalm
Canticle (old testament in morning, new testament in evening)
Psalm
Short Reading.
Short Responsory
Gospel Canticle (Benidictus in Morning, Magnificat in evening, Nuct Dimitis at night (bed-time))
Intercessions (morning & evening only)
Our Father (morning and evening only)
Closing prayer.
There are prayerfull silences between in which to meditate on and pray with the read out sections.
every psalm canticle, reading and responsory is followed by the Glory Be. and the psalms and canticles are preceded and followed by an antiphon.
there are fewer psalms at night. normal just 1 or 2.
a 4 week pattern defines the choice of psalms and canticles.
the liturgical calendar determines the antiphons and closing prayers.
This is a lovely, disciplined method of putting a structured pattern of prayer in the hands of everyone.
If you’re in the UK and are looking to purchase a copy, may I suggest you order a copy form a retailer in the republic of Ireland. The UK retailers sell copies printed by Collins - owned by Rupert Murdoch, His companies well publicised immoral activities, company wide distasteful editorial decisions, and direct attacks on the Church make me refuse to do any business with them and I advocated others to do likewise. Unfortunately the UK contract to print the Divine Office has a long time to run.
The copies on sale in Ireland are identical except they are printed by Veritas, the official church owned printers.
In the US St. Josephs press are one of a small number of publishers.