If the whole thing (four volumes, thousands of pages of psalms, readings and prayers) is too daunting, try just the readings from the Office of Readings (in your email daily), or try Tom Kreitzberg's microbreviary:
Anyone who wants to ease into the spirit of the Liturgy of the Hours without any prayerbooks can try this three-step method:
If your memorization skills are up to it, you can throw in a Miserere Friday mornings and a Te Deum Sunday and feast day mornings.
- When you wake up, pray the Benedictus
- In the early evening, pray the Magnificat
- When you go to bed, pray the Nunc Dimittis
Oh, and a Visita, quaesumus, Domine following the Nunc Dimittis as you lay you down to sleep is also liturgically correct.
(And don't forget that, except for the Benedictus and the Nunc Dimittis, all these prayers are indulgenced. The souls in purgatory will thank you.)