Every week has a reading: a Gospel passage to read aloud at the watch, a psalm and an older passage to keep it company, a short note, and something to try during the week. Fifty-two in all, one for each week of the year. There are three ways to keep them, and you can use any of them or move between them.
However you keep them, the shape of the week is the same: read the passage aloud, let the note say its piece, and talk it over together. The reading serves the watch, and the watch is what we keep.