I had a few questions about resources for trying out the Four Week Psalter and/or fixed prayer, so here goes:
As for getting into saying the Daily Office (fixed prayers): I recommend this as a regular habit for some people, but not everyone. When it comes to prayer my philosophy is something like "any stick to beat the devil," which means that I will search far and wide for what works to make me more attentive to Christ in my daily life. So when I discover that upon waking my mind is a garbled mess, or that prayer before bed is a quick descent into babble, I am inclined to use the well-articulated prayers of Christians before me rather than keep on babbling in the name of "spontaneity." (The spontaneous is overrated.)
If you want to try this, I would point you first to the
Book of Common Prayer, the prayer book of the Anglican/Episcopal church. This is the only Protestant prayer book I have found which carries the weight and beauty of expression, along with theological orthodoxy, which I look for. Moreover it's lightweight both in size and length of prayers—an individual can easily fit it into their schedule, I think.
The BCP breaks down into 4 major times of prayer: Morning Prayer, Noon Prayer, Evening Prayer, and Compline. These would typically be said upon waking, mid-day, sunset, and before bed. At each time one reads two or three psalms, a reading from the Old or New Testament, a reading from the Gospels, and various canticles (hymns derived from Scripture) and readings that have been read by Christians for centuries. The readings which accompany the Daily Office will take you through the entire Bible (minus the genealogies, etc.) in two years. It will also take you through the Psalter every seven weeks.
Another option which will take you through the Psalter in Four Weeks is
Shorter Christian Prayer (Catholic Book Publishing Company, 1999;
Amazon.com). This prayer book is an abbreviated Four Week Psalter, containing only Morning and Evening prayer, from the Catholic Liturgy of the Hours. This is not
quite the entire Psalter in 4 weeks, but it's close, and I have really enjoyed using it. (I have used the longer version,
Christian Prayer, which also includes the daytime and night prayers as well as the Office of Readings. This longer version is even closer to being entirely a 4 week Psalter; unfortunately, for whatever reason, you don't get the entire Psalter included until you spring for the 4-volume
Liturgy of the Hours.) What I especially like about this prayer book is the observance of the Church calendar; one reads different prayers and Psalms during Advent, Christmas, Lent, Easter, etc., and so is connected with the historical observance of the year centered around Christ.
What I don't like so much about this particular book is that, because it is Catholic, there is a fair amount I don't agree with in it. For instance, praying to the Saints or to Mary—as a Protestant, this is hard for me to understand or condone. But these are hardly ever central to the prayers, and I've been alright with editing on the fly. (For example, rather than asking Mary that I would grow in my faith, I just address my prayer to Jesus.) This has worked tolerably well for me, but to be honest it is hard to recommend to others. Just a warning.
Finally, as for the Psalter itself, I would recommend reading C.S. Lewis' book,
Reflection on the Psalms, which I found very helpful. Praying with the Psalms can be tricky because there's lots in there that we feel very hesitant to make a prayer - all this cursing of enemies and violent revenge against the wicked, as well as the claims to be righteous and without fault! Lewis does a very good job of indicating in what spirit we can read these Psalms, and I found this very helpful to me.
Also, if you are interested in incorporating the Psalter into your prayers but aren't so hot on the prayer book idea, you could easily just decide to read 3 or 4 Psalms in the morning and in the evening whenever you do your regular devotions and prayer.
That about taps my current thoughts about the Psalter; if I run across anything I will share it.